M. G. Gómez-Vasconcelos, D. Avellán, J. L. Macías, Guillermo Cisneros-Máximo, J. M. Sánchez-Núñez, D. Miggins
Understanding the feeder systems in scoria cones is essential because they serve as the conduits that feed the most common eruptions worldwide. Feeder dikes and their emplacement are presumably controlled by the tectonic stress field. However, the mech-anism of dike propagation and structural control in monogenetic scoria cones remains poorly understood, as well as the conditions that allow dike swarms in scoria cones and in low magma-flux monogenetic volcanic fields.This is the first direct study of a magma feeder system in the Michoacán-Guanajuato Volcanic Field in central México. Quarrying in the Cerrito Colorado scoria cone displays six orthogonal feeder dikes—four of them are N-S oriented, parallel to the least compressive stress, intruding preexisting faults, and two are E-W oriented, perpendicular to the least compressive stress, forming their own fracture at the time of the eruption. dike networks (swarms) can develop locally in the vicinity of scoria cones and other vent structures. We suggest that bifurcation of feeder dikes can result from temporary blockages of the conduit and during changes in the magma ascent rate and magma pressure. Feeder dikes at the surface can appear as tabular dikes, cylindrical conduits, or as a combina-tion of both geometries. We suggest that tabular dikes splay-off tangentially, and cylindrical conduits bifurcate radially and axially to the main vent. Our study attests to the complexity and structural control that even small scoria cones can present.
{"title":"New Insights into Feeder Dike Swarms in Scoria Cones and Their Structural Control: A Case Study in the Michoacán-Guanajuato Volcanic Field","authors":"M. G. Gómez-Vasconcelos, D. Avellán, J. L. Macías, Guillermo Cisneros-Máximo, J. M. Sánchez-Núñez, D. Miggins","doi":"10.1130/gsatg539a.1","DOIUrl":"https://doi.org/10.1130/gsatg539a.1","url":null,"abstract":"Understanding the feeder systems in scoria cones is essential because they serve as the conduits that feed the most common eruptions worldwide. Feeder dikes and their emplacement are presumably controlled by the tectonic stress field. However, the mech-anism of dike propagation and structural control in monogenetic scoria cones remains poorly understood, as well as the conditions that allow dike swarms in scoria cones and in low magma-flux monogenetic volcanic fields.This is the first direct study of a magma feeder system in the Michoacán-Guanajuato Volcanic Field in central México. Quarrying in the Cerrito Colorado scoria cone displays six orthogonal feeder dikes—four of them are N-S oriented, parallel to the least compressive stress, intruding preexisting faults, and two are E-W oriented, perpendicular to the least compressive stress, forming their own fracture at the time of the eruption. dike networks (swarms) can develop locally in the vicinity of scoria cones and other vent structures. We suggest that bifurcation of feeder dikes can result from temporary blockages of the conduit and during changes in the magma ascent rate and magma pressure. Feeder dikes at the surface can appear as tabular dikes, cylindrical conduits, or as a combina-tion of both geometries. We suggest that tabular dikes splay-off tangentially, and cylindrical conduits bifurcate radially and axially to the main vent. Our study attests to the complexity and structural control that even small scoria cones can present.","PeriodicalId":35784,"journal":{"name":"GSA Today","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44389860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-11DOI: 10.1130/abs/2021am-364729
D. Petty
In the central Williston basin, USA, the Bakken Formation and overlying lower Lodgepole Formation both have fine-grained, organic-rich stratigraphic units that have been interpreted sedimentologically to represent deep-water deposition in a low-energy, distal-marine environment; how-ever, these formations display vastly different stratigraphic geometries that challenge the conventional sedimentology interpretations. The Bakken Formation spans the Devonian-Carboniferous boundary and includes black, organic-rich (2%–26% total organic carbon [TOC]) shale units. Stratigraphic characteristics strongly support deposition of all Bakken sediments in shallow water, as indicated by (1) the Bakken stratigraphic position overlying a major subaerial unconformity; (2) the restriction of Bakken strata to basinal areas; (3) the absence of shale-equivalent landward deposits; (4) a layer-cake, onlap, landward-thinning stratigraphic geometry for all Bakken units; (5) gradual landward shale pinchouts that occur by intra-shale onlap and stratal thinning, not erosional truncation; (6) unequivocal evidence for very shallow-water middle Bakken deposition; and (7) the absence of evidence for large intra-Bakken sea-level changes. Lower Lodgepole strata in the Williston basin are characterized by prominent sigmoidal clinoforms. In the lower Virden clinoform, argillaceous mudstone, laminated microcrystalline dolostone, microbial-peloidal-intraclastic packstone, and skeletal-oolitic limestone form a shelf facies that transitions seaward into a thick (maximum 80 m), skeletal-peloidal mudstone to packstone slope facies, which transitions seaward into seaward-thinning (10 m to 1 m), black, organic-rich (1%–8% TOC) carbonate mudstone in a basin-floor facies,
在美国威利斯顿盆地中部，Bakken组和其上的Lodgepole组下部都具有细粒、富有机质的地层单元，沉积学上认为这些地层单元代表了低能量、远海环境下的深水沉积;然而，这些地层显示出截然不同的地层几何形状，这对传统的沉积学解释提出了挑战。巴肯组横跨泥盆系-石炭系界线，包括黑色富有机质(总有机碳[TOC] 2%-26%)页岩单元。地层特征强烈支持所有巴肯沉积物在浅水沉积，这表明:(1)巴肯地层位置位于一个主要的陆上不整合面之上;(2)巴肯地层局限于盆地地区;(3)缺乏与页岩相当的陆向矿床;(4)所有巴肯单元的层饼状、上覆、陆向减薄地层几何形状;(5)由页岩内部上覆和地层变薄造成的逐渐向陆地的页岩尖突，而不是侵蚀截断;(6)巴肯中部极浅水沉积的明确证据;(7)缺乏巴肯内部海平面大变化的证据。威利斯顿盆地下Lodgepole地层以显著的s形斜形为特征。在下Virden斜状岩中，泥质泥岩、层状微晶白云岩、微生物-似球-碎屑内泥质岩和骨架-鲕粒灰岩形成陆棚相，向海过渡为厚(最大80 m)、骨架-似球泥岩到包岩斜坡相，向海过渡为向海变薄(10 m ~ 1 m)、黑色、富有机质(1% ~ 8% TOC)的盆地底相碳酸盐泥岩。
{"title":"SHALLOW-WATER VS. DEEP-WATER STRATIGRAPHIC GEOMETRIES IN THE ORGANIC-RICH SHALE/MUDSTONE DEBATE","authors":"D. Petty","doi":"10.1130/abs/2021am-364729","DOIUrl":"https://doi.org/10.1130/abs/2021am-364729","url":null,"abstract":"In the central Williston basin, USA, the Bakken Formation and overlying lower Lodgepole Formation both have fine-grained, organic-rich stratigraphic units that have been interpreted sedimentologically to represent deep-water deposition in a low-energy, distal-marine environment; how-ever, these formations display vastly different stratigraphic geometries that challenge the conventional sedimentology interpretations. The Bakken Formation spans the Devonian-Carboniferous boundary and includes black, organic-rich (2%–26% total organic carbon [TOC]) shale units. Stratigraphic characteristics strongly support deposition of all Bakken sediments in shallow water, as indicated by (1) the Bakken stratigraphic position overlying a major subaerial unconformity; (2) the restriction of Bakken strata to basinal areas; (3) the absence of shale-equivalent landward deposits; (4) a layer-cake, onlap, landward-thinning stratigraphic geometry for all Bakken units; (5) gradual landward shale pinchouts that occur by intra-shale onlap and stratal thinning, not erosional truncation; (6) unequivocal evidence for very shallow-water middle Bakken deposition; and (7) the absence of evidence for large intra-Bakken sea-level changes. Lower Lodgepole strata in the Williston basin are characterized by prominent sigmoidal clinoforms. In the lower Virden clinoform, argillaceous mudstone, laminated microcrystalline dolostone, microbial-peloidal-intraclastic packstone, and skeletal-oolitic limestone form a shelf facies that transitions seaward into a thick (maximum 80 m), skeletal-peloidal mudstone to packstone slope facies, which transitions seaward into seaward-thinning (10 m to 1 m), black, organic-rich (1%–8% TOC) carbonate mudstone in a basin-floor facies,","PeriodicalId":35784,"journal":{"name":"GSA Today","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47916216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In 2019, the Anthropocene Working Group proposed the creation of an Anthropocene chronostratigraphic time unit to follow the Holocene Epoch. The Anthropocene time period would begin in the mid-twentieth century, coincident with rapid acceleration of multiple, ongoing anthropogenic changes to Earth’s surface and environments. Radioactive isotopes dispersed during the 1952– 1962 period of atmospheric thermonuclear-bomb tests form a proposed global marker for the beginning of the Anthropocene. This marker is proposed for purely geological rea-sons as it is reasonably precise and global in scope. These isotopes are also a marker for the initiation of a new human capacity to trigger global environmental change in a period of hours. The possibility of a global, multiyear nuclear winter following a nuclear war between North Atlantic Treaty Organization nations and Russia is suggested by recent studies of wildfires that injected sunlight-blocking smoke into the stratosphere, and by increasingly sophisticated numerical simulations of global climate following a major nuclear war. Although the proposal for an Anthropocene time period was made without consideration of the consequences of nuclear war or nuclear winter, designating the period of thermonuclear weapon tests as initiating an Anthropocene time period is supported here specifically because it indicates a new human capability for rapid and destructive environmental change on a global scale.
{"title":"Nuclear Winter and the Anthropocene","authors":"J. Spencer","doi":"10.1130/gsatg538a.1","DOIUrl":"https://doi.org/10.1130/gsatg538a.1","url":null,"abstract":"In 2019, the Anthropocene Working Group proposed the creation of an Anthropocene chronostratigraphic time unit to follow the Holocene Epoch. The Anthropocene time period would begin in the mid-twentieth century, coincident with rapid acceleration of multiple, ongoing anthropogenic changes to Earth’s surface and environments. Radioactive isotopes dispersed during the 1952– 1962 period of atmospheric thermonuclear-bomb tests form a proposed global marker for the beginning of the Anthropocene. This marker is proposed for purely geological rea-sons as it is reasonably precise and global in scope. These isotopes are also a marker for the initiation of a new human capacity to trigger global environmental change in a period of hours. The possibility of a global, multiyear nuclear winter following a nuclear war between North Atlantic Treaty Organization nations and Russia is suggested by recent studies of wildfires that injected sunlight-blocking smoke into the stratosphere, and by increasingly sophisticated numerical simulations of global climate following a major nuclear war. Although the proposal for an Anthropocene time period was made without consideration of the consequences of nuclear war or nuclear winter, designating the period of thermonuclear weapon tests as initiating an Anthropocene time period is supported here specifically because it indicates a new human capability for rapid and destructive environmental change on a global scale.","PeriodicalId":35784,"journal":{"name":"GSA Today","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41582200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Longbottom, Leila Wahab, Kyungjin Min, Anna K. Jurusik, K. Moreland, M. Dolui, Touyee Thao, Melinda Gonzales, Yulissa Rojas, J. Alvarez, Zachary Malone, Jielu Yan, T. Ghezzehei, A. Berhe
Soils are the foundation of life on land and represent one of the largest global carbon (C) reservoirs. Because of the vast amount of C that they store and the continu-ous fluxes of C with the atmosphere, soil can either be part of the solution or problem with respect to climate change. Using a bank account analogy, the size and signifi-cance of the soil organic C (SOC) pool is best understood as the balance between inputs (deposits) from net primary produc-tivity and outputs (withdrawals) from SOC through decay and/or physical transport. Reversing the current problematic trend of increasing concentration of greenhouse gases in the atmosphere must be met with reduced fossil fuel emissions. At the same time, we argue that “climate-smart” land management can promote both terrestrial sequestration of atmospheric carbon dioxide (CO 2 ) and contribute to improving soil health and benefits. In this review, we highlight environments that are particularly vulnerable to SOC destabilization via land use and climatic factors and outline existing and emerging strategies that use soils to address anthropogenic climate change. Here, three contrasting eco- systems reveal differing SOC richness and dynamics: (A) agricultural, (B) grassland/shrubland, and (C) forested. Conventional agriculture (A) often leads to lower carbon stocks, and overall, less carbon input to the soil carbon pool. Grasslands (B) can harbor plants with deeper and more extensive root systems, medium to high amounts of SOC stock, and greater carbon inputs to the SOC pool. Forests (C) can have the deepest rooting system, a high amount of soil C stock, greatest density of mineral-associated C, and high rate of input of C to soils. Overall, organo-mineral association(s) and SOC pool is a function of the “balance” of C inputs and outputs in the soil organic carbon “bank account.”
{"title":"What’s Soil Got to Do with Climate Change?","authors":"T. Longbottom, Leila Wahab, Kyungjin Min, Anna K. Jurusik, K. Moreland, M. Dolui, Touyee Thao, Melinda Gonzales, Yulissa Rojas, J. Alvarez, Zachary Malone, Jielu Yan, T. Ghezzehei, A. Berhe","doi":"10.1130/gsatg519a.1","DOIUrl":"https://doi.org/10.1130/gsatg519a.1","url":null,"abstract":"Soils are the foundation of life on land and represent one of the largest global carbon (C) reservoirs. Because of the vast amount of C that they store and the continu-ous fluxes of C with the atmosphere, soil can either be part of the solution or problem with respect to climate change. Using a bank account analogy, the size and signifi-cance of the soil organic C (SOC) pool is best understood as the balance between inputs (deposits) from net primary produc-tivity and outputs (withdrawals) from SOC through decay and/or physical transport. Reversing the current problematic trend of increasing concentration of greenhouse gases in the atmosphere must be met with reduced fossil fuel emissions. At the same time, we argue that “climate-smart” land management can promote both terrestrial sequestration of atmospheric carbon dioxide (CO 2 ) and contribute to improving soil health and benefits. In this review, we highlight environments that are particularly vulnerable to SOC destabilization via land use and climatic factors and outline existing and emerging strategies that use soils to address anthropogenic climate change. Here, three contrasting eco- systems reveal differing SOC richness and dynamics: (A) agricultural, (B) grassland/shrubland, and (C) forested. Conventional agriculture (A) often leads to lower carbon stocks, and overall, less carbon input to the soil carbon pool. Grasslands (B) can harbor plants with deeper and more extensive root systems, medium to high amounts of SOC stock, and greater carbon inputs to the SOC pool. Forests (C) can have the deepest rooting system, a high amount of soil C stock, greatest density of mineral-associated C, and high rate of input of C to soils. Overall, organo-mineral association(s) and SOC pool is a function of the “balance” of C inputs and outputs in the soil organic carbon “bank account.”","PeriodicalId":35784,"journal":{"name":"GSA Today","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42527593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Table S1: Geometric measurements obtained from satellite imagery of rapidly drained thermokarst lakes and associated deltas and thermo-erosion gullies. Lake ID relate to drained lakes identified in Nitze et al. (2020). Table S2: Estimated soil organic carbon content measured in gigagram (Gg) in top 2 m removed from thermo-erosion gullies. Estimates and approximate spatial resolution are derived from spatial statistical models presented in Zhu and McGuire (2016).
{"title":"Supplemental Material: Rapid sediment re-deposition may limit carbon release during catastrophic thermokarst lake drainage","authors":"B. Burnham, E. al.","doi":"10.1130/gsat.s.19083299","DOIUrl":"https://doi.org/10.1130/gsat.s.19083299","url":null,"abstract":"Table S1: Geometric measurements obtained from satellite imagery of rapidly drained thermokarst lakes and associated deltas and thermo-erosion gullies. Lake ID relate to drained lakes identified in Nitze et al. (2020). Table S2: Estimated soil organic carbon content measured in gigagram (Gg) in top 2 m removed from thermo-erosion gullies. Estimates and approximate spatial resolution are derived from spatial statistical models presented in Zhu and McGuire (2016).","PeriodicalId":35784,"journal":{"name":"GSA Today","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43139866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Demographic information for participants in all phases of the study and the survey and interview questions for all phases of the study
研究所有阶段参与者的人口统计信息以及研究所有阶段的调查和访谈问题
{"title":"Supplemental Material: Learning from the COVID-19 Pandemic: How Faculty Experiences Can Prepare Us for Future System-Wide Disruption","authors":"K. Bateman, et al.","doi":"10.1130/gsat.s.17209481","DOIUrl":"https://doi.org/10.1130/gsat.s.17209481","url":null,"abstract":"Demographic information for participants in all phases of the study and the survey and interview questions for all phases of the study","PeriodicalId":35784,"journal":{"name":"GSA Today","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47997949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Table S1: Detrital zircon U-Pb age and trace element ratio global compilation
表S1：碎屑锆石U-Pb年龄和微量元素比例全球汇编
{"title":"Supplemental Material: Continental Magmatism and Uplift as the Primary Driver for First-Order Oceanic 87Sr/86Sr Variability with Implications for Global Climate and Atmospheric Oxygenation","authors":"T. Paulsen, E. al.","doi":"10.1130/gsat.s.16942894","DOIUrl":"https://doi.org/10.1130/gsat.s.16942894","url":null,"abstract":"Table S1: Detrital zircon U-Pb age and trace element ratio global compilation","PeriodicalId":35784,"journal":{"name":"GSA Today","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44223586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Shah, Robby Morrow, Michael M. Pace, M. Harris, W. Doar
Critical mineral resources titanium, zirconium, and rare earth elements occur in placer deposits over vast parts of the U.S. Atlantic Coastal Plain. Key questions regarding provenance, pathways of minerals to deposit sites, and relations to geologic features remain unexplained. As part of a national effort to collect data over regions prospective for critical minerals, the first public high-resolution aeroradiometric survey over the U.S. Atlantic Coastal Plain was conducted over Quaternary sediments in South Carolina. The new data provide an unprecedented view of potential deposits by imaging Th-bearing minerals in the heavy mineral assemblage. Sand ridges show the highest radiometric Th values with localized, linear anomalies, especially along the shoreface and in areas reworked by multiple processes and/or during multiple episodes. Estuarine areas with finer-grained sediments show lower, distributed Th anomalies. Th values averaged over geologic unit areas are similar for both environments, suggesting that heavy minerals are present but have not been locally concentrated in the lower-energy estuarine environments. Radiometric K highlights immature minerals such as mica and potassium feldspar. K is elevated within shallow sediments younger than ca. 130 ka, an attribute that persists in regional data from northern South Carolina to northern Florida. Both K and Th are elevated over the floodplains of the Santee River and other rivers with headwaters in the igneous and metamorphic Piedmont Terrane. The persistence of K anomalies for distances of more than 100 km from the Santee River floodplain suggests that heavy minerals are delivered from the Piedmont to offshore areas by major rivers, transported along the coast by the longshore current, and redeposited onshore by marine processes.
{"title":"Mapping Critical Minerals from the Sky","authors":"A. Shah, Robby Morrow, Michael M. Pace, M. Harris, W. Doar","doi":"10.1130/gsatg512a.1","DOIUrl":"https://doi.org/10.1130/gsatg512a.1","url":null,"abstract":"Critical mineral resources titanium, zirconium, and rare earth elements occur in placer deposits over vast parts of the U.S. Atlantic Coastal Plain. Key questions regarding provenance, pathways of minerals to deposit sites, and relations to geologic features remain unexplained. As part of a national effort to collect data over regions prospective for critical minerals, the first public high-resolution aeroradiometric survey over the U.S. Atlantic Coastal Plain was conducted over Quaternary sediments in South Carolina. The new data provide an unprecedented view of potential deposits by imaging Th-bearing minerals in the heavy mineral assemblage. Sand ridges show the highest radiometric Th values with localized, linear anomalies, especially along the shoreface and in areas reworked by multiple processes and/or during multiple episodes. Estuarine areas with finer-grained sediments show lower, distributed Th anomalies. Th values averaged over geologic unit areas are similar for both environments, suggesting that heavy minerals are present but have not been locally concentrated in the lower-energy estuarine environments. Radiometric K highlights immature minerals such as mica and potassium feldspar. K is elevated within shallow sediments younger than ca. 130 ka, an attribute that persists in regional data from northern South Carolina to northern Florida. Both K and Th are elevated over the floodplains of the Santee River and other rivers with headwaters in the igneous and metamorphic Piedmont Terrane. The persistence of K anomalies for distances of more than 100 km from the Santee River floodplain suggests that heavy minerals are delivered from the Piedmont to offshore areas by major rivers, transported along the coast by the longshore current, and redeposited onshore by marine processes.","PeriodicalId":35784,"journal":{"name":"GSA Today","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47562103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
W. McClelland, J. Strauss, M. Colpron, J. Gilotti, K. Faehnrich, S. Malone, G. Gehrels, F. Macdonald, J. Oldow
Probability plots, Shepard plot, and sources of U/Pb data in Figure 2A.
图2A中的概率图、Shepard图和U/Pb数据来源。
{"title":"Supplemental Material: ‘Taters versus Sliders: Evidence for a Long-Lived History of Strike-Slip Displacement along the Canadian Arctic Transform System (CATS)","authors":"W. McClelland, J. Strauss, M. Colpron, J. Gilotti, K. Faehnrich, S. Malone, G. Gehrels, F. Macdonald, J. Oldow","doi":"10.1130/GSATG500A.1","DOIUrl":"https://doi.org/10.1130/GSATG500A.1","url":null,"abstract":"Probability plots, Shepard plot, and sources of U/Pb data in Figure 2A.","PeriodicalId":35784,"journal":{"name":"GSA Today","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47023993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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