Wendy K. Stovall, C. Driedger, E. Westby, Lisa M. Faust
{"title":"Living with volcano hazards","authors":"Wendy K. Stovall, C. Driedger, E. Westby, Lisa M. Faust","doi":"10.3133/FS20183075","DOIUrl":"https://doi.org/10.3133/FS20183075","url":null,"abstract":"","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45403182","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}
{"title":"Assessing the impact of the Conservation Reserve Program on honey bee health","authors":"Clint R. V. Otto","doi":"10.3133/FS20183082","DOIUrl":"https://doi.org/10.3133/FS20183082","url":null,"abstract":"","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69284144","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}
D. Yager, E. Anderson, M. Deszcz-Pan, B. Rodriguez, Bruce D. Smith
{"title":"Geological and geophysical data for a three-dimensional view—Inside the San Juan and Silverton Calderas, Southern Rocky Mountains Volcanic Field, Silverton, Colorado","authors":"D. Yager, E. Anderson, M. Deszcz-Pan, B. Rodriguez, Bruce D. Smith","doi":"10.3133/FS20193026","DOIUrl":"https://doi.org/10.3133/FS20193026","url":null,"abstract":"","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69284523","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}
C. J. Schenk, T. Mercier, M. Tennyson, T. Finn, Cheryl A. Woodall, M. Brownfield, K. Marra, Heidi M. Leathers-Miller, P. Le, R. M. Drake
The U.S. Geological Survey (USGS) quantitatively assessed the potential for undiscovered, technically recoverable continuous oil and gas resources in the Jurassic Posidonia Shale Total Petroleum System (TPS) of western Greece and southern Albania (fig. 1). From the Late Triassic to Early Jurassic, this area of western Greece and southern Albania was part of a regionally extensive carbonate platform that developed on and around the Apulian Plate (Karakitsios, 1995; 2013). Deposited along the passive margin during this time were as much as 1,000 meters of platform carbonates of the Pantokrator Limestone. Jurassic extension and rifting associated with the opening of the neo-Tethys Ocean led to the formation of numerous grabens and half-grabens along the margin of the Apulian Plate (Karakitsios, 1995; Karakitsios and Rigakis, 2007). The bottom waters of the deeper grabens and half-grabens were anoxic, resulting in the deposition and preservation of organic-rich petroleum source rocks of the Jurassic Posidonia Shale. These extensional structures persisted through the Jurassic and eventually were buried by the regionally extensive, postrift Cretaceous Vigla Limestone. From the Cretaceous through the Paleogene, the Apulian Plate was relatively undeformed and buried by perhaps hundreds of meters of carbonate deposits. Beginning in the Eocene and ending in the Miocene, the Apulian Plate collided with the Eurasian Plate, forming the Dinaride and Hellenide fold and thrust belts, resulting in compressional deformation of Mesozoic rocks. Associated with the collision of Apulia was the progradation of orogenic clastic wedges up to several kilometers thick (Gonzalez-Bonorino, 1996; Karakitsios, 2013). Neogene burial by these orogenic clastics resulted in the thermal maturation into the oiland gas-generation windows of the Jurassic Posidonia source rocks (Rigakis and Karakitsios, 1998; Karakitsios and Rigakis, 2007).
美国地质调查局(USGS)定量评估了希腊西部和阿尔巴尼亚南部的侏罗系Posidonia页岩全油气系统(TPS)中未被发现的、技术上可开采的连续油气资源潜力(图1)。从晚三叠世到早侏罗世，希腊西部和阿尔巴尼亚南部的这一地区是在阿普利安板块上及其周围发育的一个区域广泛的碳酸盐岩台地的一部分(Karakitsios, 1995;2013)。在此期间，沿被动边缘沉积了长达1000米的潘托克拉托石灰岩台地碳酸盐。侏罗纪的伸展和裂谷作用与新特提斯洋的张开有关，导致沿阿普利亚板块边缘形成了许多地堑和半地堑(Karakitsios, 1995;Karakitsios and Rigakis, 2007)。深地堑和半地堑底部水体缺氧，形成了侏罗系Posidonia页岩富有机质烃源岩的沉积和保存。这些伸展构造持续了整个侏罗纪，最终被区域性广泛的白垩纪后滑脱期维格拉灰岩所掩埋。从白垩纪到古近纪，阿普利安板块相对来说没有变形，并被可能数百米的碳酸盐沉积物所掩埋。始新世起至中新世止，阿普利亚板块与欧亚板块碰撞，形成了迪纳里德和希腊里德褶皱和冲断带，造成了中生代岩石的挤压变形。与普利亚碰撞有关的是造山碎屑楔的进积，厚度可达数公里(Gonzalez-Bonorino, 1996;Karakitsios, 2013)。这些造山碎屑的新近纪埋藏导致热成熟进入侏罗纪Posidonia烃源岩的油气生窗(Rigakis and Karakitsios, 1998;Karakitsios and Rigakis, 2007)。
{"title":"Assessment of continuous oil and gas resources in Jurassic Posidonia Shales of Greece and Albania, 2019","authors":"C. J. Schenk, T. Mercier, M. Tennyson, T. Finn, Cheryl A. Woodall, M. Brownfield, K. Marra, Heidi M. Leathers-Miller, P. Le, R. M. Drake","doi":"10.3133/fs20193075","DOIUrl":"https://doi.org/10.3133/fs20193075","url":null,"abstract":"The U.S. Geological Survey (USGS) quantitatively assessed the potential for undiscovered, technically recoverable continuous oil and gas resources in the Jurassic Posidonia Shale Total Petroleum System (TPS) of western Greece and southern Albania (fig. 1). From the Late Triassic to Early Jurassic, this area of western Greece and southern Albania was part of a regionally extensive carbonate platform that developed on and around the Apulian Plate (Karakitsios, 1995; 2013). Deposited along the passive margin during this time were as much as 1,000 meters of platform carbonates of the Pantokrator Limestone. Jurassic extension and rifting associated with the opening of the neo-Tethys Ocean led to the formation of numerous grabens and half-grabens along the margin of the Apulian Plate (Karakitsios, 1995; Karakitsios and Rigakis, 2007). The bottom waters of the deeper grabens and half-grabens were anoxic, resulting in the deposition and preservation of organic-rich petroleum source rocks of the Jurassic Posidonia Shale. These extensional structures persisted through the Jurassic and eventually were buried by the regionally extensive, postrift Cretaceous Vigla Limestone. From the Cretaceous through the Paleogene, the Apulian Plate was relatively undeformed and buried by perhaps hundreds of meters of carbonate deposits. Beginning in the Eocene and ending in the Miocene, the Apulian Plate collided with the Eurasian Plate, forming the Dinaride and Hellenide fold and thrust belts, resulting in compressional deformation of Mesozoic rocks. Associated with the collision of Apulia was the progradation of orogenic clastic wedges up to several kilometers thick (Gonzalez-Bonorino, 1996; Karakitsios, 2013). Neogene burial by these orogenic clastics resulted in the thermal maturation into the oiland gas-generation windows of the Jurassic Posidonia source rocks (Rigakis and Karakitsios, 1998; Karakitsios and Rigakis, 2007).","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69284747","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}
D. Higley, Catherine E Enomoto, Heidi M. Leathers-Miller, Geoffrey S. Ellis, T. Mercier, C. J. Schenk, M. Trippi, P. Le, M. Brownfield, Cheryl A. Woodall, K. Marra, M. Tennyson
{"title":"Assessment of undiscovered gas resources in the Middle Devonian Marcellus Shale of the Appalachian Basin Province, 2019","authors":"D. Higley, Catherine E Enomoto, Heidi M. Leathers-Miller, Geoffrey S. Ellis, T. Mercier, C. J. Schenk, M. Trippi, P. Le, M. Brownfield, Cheryl A. Woodall, K. Marra, M. Tennyson","doi":"10.3133/fs20193050","DOIUrl":"https://doi.org/10.3133/fs20193050","url":null,"abstract":"","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69284903","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}
The Mojave Basin Shallow Aquifer study unit (Mojave) covers approximately 4,680 square kilometers (2,908 square miles) in the western part of the Mojave Desert in San Bernardino County. The study unit consists of groundwater basins along the Mojave River, the El Mirage Valley groundwater basin, and part of the Harper Valley groundwater basin. The Mojave study unit was divided into two study areas—the floodplain study area along the Mojave River and the regional study area surrounding and underlying the floodplain study area. Aquifers in the floodplain study area consist of coarse granitic river-channel and floodplain alluvium deposited by the Mojave River. Aquifers in the regional study area consist of alluvium derived from older stream deposits, locally derived alluvial fans, playa lake deposits, and fractured bedrock (Stamos and others, 2001; Groover and Izbicki, 2019). This study examined the quality of groundwater resources used for domestic drinkingwater supply. Previous studies of groundwater resources used for public drinking-water supply in the Mojave Desert have observed elevated concentrations of some constituents, primarily trace elements, in some wells (Dawson and Belitz, 2012; Metzger and others, 2015). Domestic wells in the study unit typically are drilled to depths of 27–186 meters (Groover and others, 2019), which is shallower than the depths of public-supply wells in the same area (typically 90–300 meters deep; Dawson and Belitz, 2012). Water levels in domestic wells in the study unit typically are 9–140 meters below land surface (Groover and others, 2019). This study was designed to provide a statistically representative assessment of the quality of groundwater resources used for domestic drinking water. A total of 48 domestic wells were sampled between January and May 2018 (Groover and others, 2019). Eleven additional wells were sampled to evaluate processes affecting groundwater quality, but these wells are not included in this assessment.
莫哈韦盆地浅层含水层研究单元(Mojave)位于圣贝纳迪诺县莫哈韦沙漠西部，占地约4,680平方公里(2,908平方英里)。该研究单元由沿莫哈韦河的地下水盆地、El Mirage河谷地下水盆地和部分Harper河谷地下水盆地组成。将莫哈韦研究单元划分为两个研究区——沿莫哈韦河漫滩研究区和漫滩研究区周围及下伏的区域研究区。河漫滩研究区内的含水层由莫哈韦河沉积的粗花岗岩河道和河漫滩冲积层组成。区域研究区的含水层包括来自较老河流沉积物的冲积层、本地冲积扇、playa湖沉积物和断裂的基岩(Stamos等人，2001;Groover and Izbicki, 2019)。本研究考察了用于生活饮用水供应的地下水资源的质量。之前对莫哈韦沙漠用于公共饮用水供应的地下水资源的研究发现，在一些井中，某些成分(主要是微量元素)的浓度升高(Dawson和Belitz, 2012;Metzger等人，2015)。研究单位的国内井通常钻探深度为27-186米(Groover等人，2019)，比同一地区的公共供应井深度浅(通常为90-300米深;Dawson and Belitz, 2012)。研究单位的家庭井的水位通常在地表以下9-140米(Groover等人，2019)。本研究旨在提供具有统计代表性的用于生活饮用水的地下水资源质量评估。2018年1月至5月期间，共对48口国内井进行了采样(Groover等人，2019年)。另外还对11口井进行了取样，以评估影响地下水质量的过程，但这些井不包括在本次评估中。
{"title":"Groundwater quality in shallow aquifers in the western Mojave Desert, California","authors":"K. Groover, Dara A. Goldrath","doi":"10.3133/FS20193033","DOIUrl":"https://doi.org/10.3133/FS20193033","url":null,"abstract":"The Mojave Basin Shallow Aquifer study unit (Mojave) covers approximately 4,680 square kilometers (2,908 square miles) in the western part of the Mojave Desert in San Bernardino County. The study unit consists of groundwater basins along the Mojave River, the El Mirage Valley groundwater basin, and part of the Harper Valley groundwater basin. The Mojave study unit was divided into two study areas—the floodplain study area along the Mojave River and the regional study area surrounding and underlying the floodplain study area. Aquifers in the floodplain study area consist of coarse granitic river-channel and floodplain alluvium deposited by the Mojave River. Aquifers in the regional study area consist of alluvium derived from older stream deposits, locally derived alluvial fans, playa lake deposits, and fractured bedrock (Stamos and others, 2001; Groover and Izbicki, 2019). This study examined the quality of groundwater resources used for domestic drinkingwater supply. Previous studies of groundwater resources used for public drinking-water supply in the Mojave Desert have observed elevated concentrations of some constituents, primarily trace elements, in some wells (Dawson and Belitz, 2012; Metzger and others, 2015). Domestic wells in the study unit typically are drilled to depths of 27–186 meters (Groover and others, 2019), which is shallower than the depths of public-supply wells in the same area (typically 90–300 meters deep; Dawson and Belitz, 2012). Water levels in domestic wells in the study unit typically are 9–140 meters below land surface (Groover and others, 2019). This study was designed to provide a statistically representative assessment of the quality of groundwater resources used for domestic drinking water. A total of 48 domestic wells were sampled between January and May 2018 (Groover and others, 2019). Eleven additional wells were sampled to evaluate processes affecting groundwater quality, but these wells are not included in this assessment.","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69284993","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}
This presentation is intended to provide background on naturally occurring uranium in groundwater, describe the risks it poses, explore key data and results, and provide well owners, teachers, community members, and public health officials with information on what steps can be taken to mitigate this risk. The presentation is informed by a U.S. Geological Survey (USGS) preliminary assessment of uranium concentrations in groundwater in northeastern Washington State (Kahle and others, 2018, A geologic map of northeastern Washington State shows the widespread presence of intrusive igneous rocks (pinks and reds). The map shows uranium assay sites and mines, indicating that uranium has been found in the region in high enough concentrations to economically extract. This map of Washington State shows potential exposure to radon in air, based on the presence of uranium-bearing rocks or sediment. The high (red) and moderately high (orange) hazard classifications found in northeastern Washington State show the geologic potential for elevated uranium levels since radon is a daughter product of uranium decay.
{"title":"Naturally occurring uranium in groundwater in northeastern Washington State","authors":"S. Kahle","doi":"10.3133/fs20193069","DOIUrl":"https://doi.org/10.3133/fs20193069","url":null,"abstract":"This presentation is intended to provide background on naturally occurring uranium in groundwater, describe the risks it poses, explore key data and results, and provide well owners, teachers, community members, and public health officials with information on what steps can be taken to mitigate this risk. The presentation is informed by a U.S. Geological Survey (USGS) preliminary assessment of uranium concentrations in groundwater in northeastern Washington State (Kahle and others, 2018, A geologic map of northeastern Washington State shows the widespread presence of intrusive igneous rocks (pinks and reds). The map shows uranium assay sites and mines, indicating that uranium has been found in the region in high enough concentrations to economically extract. This map of Washington State shows potential exposure to radon in air, based on the presence of uranium-bearing rocks or sediment. The high (red) and moderately high (orange) hazard classifications found in northeastern Washington State show the geologic potential for elevated uranium levels since radon is a daughter product of uranium decay.","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69285167","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}
Mustapha Alhassan, C. Lawrence, S. Richardson, E. Pindilli
U.S. Department of the Interior U.S. Geological Survey Fact Sheet 2019–3003 February 2019 U.S. Geological Survey (USGS) science supports groundwater resource management in the Mississippi Alluvial Plain (MAP) region. The USGS Science and Decisions Center is working with the Water Availability and Use Science Program (WAUSP) to integrate economics into a sophisticated model of groundwater in the region. The model will quantify the status of the groundwater system and help researchers, stakeholders, and decision-makers understand and manage groundwater resources. Including economics in the model will let users consider the influence of groundwater levels on regional economics and the effects of economic factors on the demand for groundwater. Agriculture is a major source of economic activity in the Mississippi Alluvial Plain (MAP) region. The MAP region consists of parts of Arkansas, Mississippi, Louisiana, Tennessee, Kentucky, Illinois, and Missouri (fig. 1). Irrigated acreage in the region accounted for 14 percent of total U.S. agriculture in 2015 (Dieter and others, 2018). Major crops grown in the region include corn, cotton, rice, and soybeans. Catfish is an important aquaculture commodity. Agriculture in the region relies on groundwater for irrigation. Approximately 65 percent of farmland in the region relies on groundwater from the Mississippi River Valley alluvial aquifer (MRVAA) for irrigation and aquaculture (Kebede and others, 2014).1 Irrigated acreage in the region is on the rise; from 2007 to 2012, irrigated acreage in Arkansas and Mississippi increased by about 7.7 and 20.7 percent, respectively (U.S. Department of Agriculture-National
{"title":"The Mississippi Alluvial Plain aquifers—An engine for economic activity","authors":"Mustapha Alhassan, C. Lawrence, S. Richardson, E. Pindilli","doi":"10.3133/FS20193003","DOIUrl":"https://doi.org/10.3133/FS20193003","url":null,"abstract":"U.S. Department of the Interior U.S. Geological Survey Fact Sheet 2019–3003 February 2019 U.S. Geological Survey (USGS) science supports groundwater resource management in the Mississippi Alluvial Plain (MAP) region. The USGS Science and Decisions Center is working with the Water Availability and Use Science Program (WAUSP) to integrate economics into a sophisticated model of groundwater in the region. The model will quantify the status of the groundwater system and help researchers, stakeholders, and decision-makers understand and manage groundwater resources. Including economics in the model will let users consider the influence of groundwater levels on regional economics and the effects of economic factors on the demand for groundwater. Agriculture is a major source of economic activity in the Mississippi Alluvial Plain (MAP) region. The MAP region consists of parts of Arkansas, Mississippi, Louisiana, Tennessee, Kentucky, Illinois, and Missouri (fig. 1). Irrigated acreage in the region accounted for 14 percent of total U.S. agriculture in 2015 (Dieter and others, 2018). Major crops grown in the region include corn, cotton, rice, and soybeans. Catfish is an important aquaculture commodity. Agriculture in the region relies on groundwater for irrigation. Approximately 65 percent of farmland in the region relies on groundwater from the Mississippi River Valley alluvial aquifer (MRVAA) for irrigation and aquaculture (Kebede and others, 2014).1 Irrigated acreage in the region is on the rise; from 2007 to 2012, irrigated acreage in Arkansas and Mississippi increased by about 7.7 and 20.7 percent, respectively (U.S. Department of Agriculture-National","PeriodicalId":36286,"journal":{"name":"U.S. Geological Survey Fact Sheet","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69284210","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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