{"title":"Microbially Induced Sedimentary Structures of the Mesoproterozoic Lanoria Formation, Franklin Mountains, El Paso County, Texas","authors":"Eric J. Kappus, S. Lucas, M. Stimson","doi":"10.56577/sm-2017.529","DOIUrl":"https://doi.org/10.56577/sm-2017.529","url":null,"abstract":"","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130351890","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":"The Recent Alpine High Oil and Gas Field Discovery, West Texas","authors":"A. Benson","doi":"10.56577/sm-2017.493","DOIUrl":"https://doi.org/10.56577/sm-2017.493","url":null,"abstract":"","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124746867","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":"Functional Change in Molluscan Diversity Dynamics Observed Across OAE2","authors":"Nicholas A. Freymueller, C. Myers","doi":"10.56577/sm-2017.523","DOIUrl":"https://doi.org/10.56577/sm-2017.523","url":null,"abstract":"","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117026447","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":"The Characterization of Abandoned Uranium Mines in New Mexico","authors":"John Asafo-Akowuah, V. McLemore","doi":"10.56577/sm-2017.528","DOIUrl":"https://doi.org/10.56577/sm-2017.528","url":null,"abstract":"","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122535828","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 north-striking, 19 km-long Cliff fault passes 1.5 km west of the Sevilleta National Wildlife Refuge headquarters. My study uses stratigraphic relationships to interpret tectonic activity of the Cliff fault during the early Pleistocene. Previous work had suggested the latest movements occurred during the late and middle Pleistocene (Machette, 1978), but early Pleistocene activity remained uncertain. It is necessary to use Santa Fe Group stratigraphy because potential early Pleistocene activity on the Cliff fault antedates preserved geomorphic surfaces or fault scarps. The Cliff fault is the easternmost of a trio of Quaternary normal faults in the southwestern Albuquerque Basin, the other two being the east-down Loma Pelada and Loma Blanca faults to the west. Because these faults have been mapped as extending southward into the northern Socorro Basin, interpreting their long-term displacement behavior is important in understanding how strain is transferred between the Albuquerque and Socorro Basins. Long-term (10 6 -10 7 yr) paleoseismic records of the fault trio can also be used to evaluate if fault activity has migrated towards the center of the basin. The Cliff fault offsets strata of the Sierra Ladrones Formation, a Pliocene-early Pleistocene deposit composed mainly of sand with lesser gravel and silt-clay. The studied sediment lies stratigraphically above a sample locality of a 3 Ma tooth fossil. My field research illustrates several lithofacies in the Sierra Ladrones formation, including two different types of channel fills, floodplain deposits, hyper-concentrated or debris flow deposits, and possible colluvium and slope wash deposits. The two different types of channel fills are: (1) sandstone-dominated and trough cross-stratified, with southerly paleoflow and abundant chert clasts,
{"title":"Lithofacies Analysis of the Sierra Ladrones Formation Near the Sevilleta National Wildlife Refuge Headquarters (southern Albuquerque Basin, New Mexico): Implications for Cliff Fault Movement During the Early Pleistocene","authors":"Eda Celep, D. Koning, D. Love","doi":"10.56577/sm-2017.547","DOIUrl":"https://doi.org/10.56577/sm-2017.547","url":null,"abstract":"The north-striking, 19 km-long Cliff fault passes 1.5 km west of the Sevilleta National Wildlife Refuge headquarters. My study uses stratigraphic relationships to interpret tectonic activity of the Cliff fault during the early Pleistocene. Previous work had suggested the latest movements occurred during the late and middle Pleistocene (Machette, 1978), but early Pleistocene activity remained uncertain. It is necessary to use Santa Fe Group stratigraphy because potential early Pleistocene activity on the Cliff fault antedates preserved geomorphic surfaces or fault scarps. The Cliff fault is the easternmost of a trio of Quaternary normal faults in the southwestern Albuquerque Basin, the other two being the east-down Loma Pelada and Loma Blanca faults to the west. Because these faults have been mapped as extending southward into the northern Socorro Basin, interpreting their long-term displacement behavior is important in understanding how strain is transferred between the Albuquerque and Socorro Basins. Long-term (10 6 -10 7 yr) paleoseismic records of the fault trio can also be used to evaluate if fault activity has migrated towards the center of the basin. The Cliff fault offsets strata of the Sierra Ladrones Formation, a Pliocene-early Pleistocene deposit composed mainly of sand with lesser gravel and silt-clay. The studied sediment lies stratigraphically above a sample locality of a 3 Ma tooth fossil. My field research illustrates several lithofacies in the Sierra Ladrones formation, including two different types of channel fills, floodplain deposits, hyper-concentrated or debris flow deposits, and possible colluvium and slope wash deposits. The two different types of channel fills are: (1) sandstone-dominated and trough cross-stratified, with southerly paleoflow and abundant chert clasts,","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117195463","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":"Uranium Concentrations in Dust Flux Across the Jackpile Mine Superfund Site","authors":"Reid D. Brown, D. Cadol, B. Frey","doi":"10.56577/sm-2017.530","DOIUrl":"https://doi.org/10.56577/sm-2017.530","url":null,"abstract":"","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128640328","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}
M. Folsom, J. Pepin, J. Peacock, M. Person, S. Kelley, D. Love
{"title":"3D Inverse Models of Magnetotelluric Data in the Central Rio Grande Rift Illuminate Rift Basin Geometry and Possible Interactions Between Deep Brines and Surface Waters","authors":"M. Folsom, J. Pepin, J. Peacock, M. Person, S. Kelley, D. Love","doi":"10.56577/sm-2017.511","DOIUrl":"https://doi.org/10.56577/sm-2017.511","url":null,"abstract":"","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116185535","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. Williamson, S. Brusatte, M. Espy, C. Gautier, J. Hunter, A. Losko, R. Nelson, Katlin Schroeder, S. Vogel
{"title":"X-Ray and Neutron Computed Tomography of Vertebrate Fossils at the Los Alamos Neutron Science Center, Los Alamos National Laboratory, New Mexico","authors":"T. Williamson, S. Brusatte, M. Espy, C. Gautier, J. Hunter, A. Losko, R. Nelson, Katlin Schroeder, S. Vogel","doi":"10.56577/sm-2017.506","DOIUrl":"https://doi.org/10.56577/sm-2017.506","url":null,"abstract":"","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125695719","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}
Metoposaurs (Temnospondyli: Metoposauridae) were large, ubiquitous amphibians of the Late Triassic. They were important members of the Upper Triassic Chinle Group fauna of New Mexico and are found in these strata across the state. One of the most important metoposaur bonebeds in the world occurs in the Adamanian (upper Carnian) Garita Creek Formation near Lamy, NM, where the fossils of hundreds of individuals were hydraulically concentrated on a Late Triassic floodplain. In nearly all metoposaur populations, worldwide, many skull features show shape change throughout ontogenetic growth (allometry). Some workers have believed these allometric growth trajectories to be of taxonomic value. Here, using the largest populations available (for maximum statistical sample size), we investigate the taxonomic utility of these shape changes. Skull allometry in three populations of the metoposaur Koskinonodon perfectum (Lamy, NM; Rotten Hill, TX; Popo Agie Formation of WY) was compared to establish intra-specific variation. Then, three populations representing different genera ( Dutuitosaurus ouazzoui from northern Africa; Koskinonodon perfectum from western North America; Metoposaurus diagnosticus from eastern Europe) were compared to show variation at the generic level. Anteroposterior movement of the orbits and relative skull width at three positions (snout tip at the anterior nares, basal snout at the anterior orbits, greatest width across the quadratojugals) with respect to midline length throughout ontogeny were determined. Relative orbit position moved anteriorly in D. ouazzoui and K. perfectum (Rotten Hill), posteriorly in K. perfectum (Lamy) and K. perfectum (WY), and remained approximately fixed in M. diagnosticus . Skull width allometries were of mixed values, but with rare exceptions, the snout grew wider with respect to length throughout ontogeny, whereas the posterior skull became relatively narrower. Thus, the skulls of juveniles were somewhat triangular, and they grew to be more parallel-sided with a wider, blunter snout in adults. Comparison of the calculated allometric constants from the various populations yielded a surprising result: intra-specific variation in growth patterns was as great as or greater than inter-generic variation. The three K. perfectum populations, including the Lamy metoposaurs, were not significantly more similar to each other than they were to different genera. The salient point of this preliminary work is that allometric skull growth trajectories in metoposaurs probably have little or no taxonomic value, and metoposaur taxa should probably not be erected based solely on variations in growth patterns.
{"title":"Late Triassic Metoposaurid Amphibian Skull Allometry: Comparison of the Lamy, New Mexico, Population to Four Other Populations","authors":"L. Rinehart, S. Lucas","doi":"10.56577/sm-2017.501","DOIUrl":"https://doi.org/10.56577/sm-2017.501","url":null,"abstract":"Metoposaurs (Temnospondyli: Metoposauridae) were large, ubiquitous amphibians of the Late Triassic. They were important members of the Upper Triassic Chinle Group fauna of New Mexico and are found in these strata across the state. One of the most important metoposaur bonebeds in the world occurs in the Adamanian (upper Carnian) Garita Creek Formation near Lamy, NM, where the fossils of hundreds of individuals were hydraulically concentrated on a Late Triassic floodplain. In nearly all metoposaur populations, worldwide, many skull features show shape change throughout ontogenetic growth (allometry). Some workers have believed these allometric growth trajectories to be of taxonomic value. Here, using the largest populations available (for maximum statistical sample size), we investigate the taxonomic utility of these shape changes. Skull allometry in three populations of the metoposaur Koskinonodon perfectum (Lamy, NM; Rotten Hill, TX; Popo Agie Formation of WY) was compared to establish intra-specific variation. Then, three populations representing different genera ( Dutuitosaurus ouazzoui from northern Africa; Koskinonodon perfectum from western North America; Metoposaurus diagnosticus from eastern Europe) were compared to show variation at the generic level. Anteroposterior movement of the orbits and relative skull width at three positions (snout tip at the anterior nares, basal snout at the anterior orbits, greatest width across the quadratojugals) with respect to midline length throughout ontogeny were determined. Relative orbit position moved anteriorly in D. ouazzoui and K. perfectum (Rotten Hill), posteriorly in K. perfectum (Lamy) and K. perfectum (WY), and remained approximately fixed in M. diagnosticus . Skull width allometries were of mixed values, but with rare exceptions, the snout grew wider with respect to length throughout ontogeny, whereas the posterior skull became relatively narrower. Thus, the skulls of juveniles were somewhat triangular, and they grew to be more parallel-sided with a wider, blunter snout in adults. Comparison of the calculated allometric constants from the various populations yielded a surprising result: intra-specific variation in growth patterns was as great as or greater than inter-generic variation. The three K. perfectum populations, including the Lamy metoposaurs, were not significantly more similar to each other than they were to different genera. The salient point of this preliminary work is that allometric skull growth trajectories in metoposaurs probably have little or no taxonomic value, and metoposaur taxa should probably not be erected based solely on variations in growth patterns.","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132413228","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}
Despite the potential for the use of the Ogallala Formation as a constraint on the sedimentary response to uplift of the Southern Rocky Mountains during the Tertiary, primary age and provenance data for New Mexico Ogallala units are sparse. The current estimated depositional age of the southern Ogallala is between ~13 and 5 Ma based on vertebrate biochronology in the northeastern part of the Llano Estacado in west Texas. In an effort to improve the age constraints, detrital sanidine (DS) 40 Ar/ 39 Ar geochronology is utilized on samples from the western escarpment of the Llano Estacado and elsewhere in NM. Coupling DS age and associated K/Ca data (determined from measuring 39 Ar/ 37 Ar) and comparing this to age and K/Ca data of regional volcanic units allows estimates of maximum depositional age (MDA) and provenance. This information is utilized to better understand the evolution of the Pecos River system. DS data were determined from the Bridwell and Couch formations of the Ogallala Group near Lubbock, TX (samples courtesy of Dr. Tom Lehman). Based on biostratigraphy, the Bridwell formation is Hemphillian (10.3-4.9 Ma) and the Couch is Clarendonian (13.6-10.3 Ma). DS data yield an MDA of 6.77 Ma thus restricting the sampled interval of the Bridwell to no older than 6.77 Ma In contrast, the MDA of the Couch formation sample is 27.1 Ma with no Miocene DS grains detected. Four Miocene DS grains are found in samples from Mescalero Ridge in SE New Mexico and they provide an 11.44 MDA for Ogallala Formation in this area. The combined DS data and lithologic (eolian) similarities suggest that the Ogallala of SE New Mexico is correlative to the upper Couch Formation of west Texas. The 6-8 Ma youngest grains in the Bridwell formation indicate a New Mexico Peralta tuff source, whereas significant late Cretaceous DS grains are likely derived from reworked Cretaceous or younger sedimentary rocks. The 11.44 Ma DS grains from the Llano Estacado may be derived from Socorro area volcanics or perhaps much more distal Yellowstone Hotspot Track eruptions in Idaho, although long transport of sanidine is tephra is problematic. As a whole there are multiple DS ages between the Oligocene and Eocene that could reflect derivation from several regional volcanic fields. In detail, age and K/Ca data of Trans-Pecos volcanic field sanidines provide the best matches to some of the DS data, thereby implying an overall southern source for the Ogallala sediments. This coupled with paleocurrent data supports a north flowing paleo-Pecos river system that has been proposed by Cather (2011). Several samples from north-central New Mexico that are mapped as Ogallala yield Pleistocene DS ages with grains likely sourced from Valles Caldera eruptions. The young ages demonstrate the difficulty of correctly mapping the Ogallala and suggest that these units are likely either the Blackwater Draw or Blanco formation.
{"title":"40Ar/ 39Ar Detrital Sanidine Dating of the Ogallala Formation in Southeastern New Mexico and West Texas","authors":"Kevin Henry, M. Heizler, Steve T. Cather","doi":"10.56577/sm-2017.534","DOIUrl":"https://doi.org/10.56577/sm-2017.534","url":null,"abstract":"Despite the potential for the use of the Ogallala Formation as a constraint on the sedimentary response to uplift of the Southern Rocky Mountains during the Tertiary, primary age and provenance data for New Mexico Ogallala units are sparse. The current estimated depositional age of the southern Ogallala is between ~13 and 5 Ma based on vertebrate biochronology in the northeastern part of the Llano Estacado in west Texas. In an effort to improve the age constraints, detrital sanidine (DS) 40 Ar/ 39 Ar geochronology is utilized on samples from the western escarpment of the Llano Estacado and elsewhere in NM. Coupling DS age and associated K/Ca data (determined from measuring 39 Ar/ 37 Ar) and comparing this to age and K/Ca data of regional volcanic units allows estimates of maximum depositional age (MDA) and provenance. This information is utilized to better understand the evolution of the Pecos River system. DS data were determined from the Bridwell and Couch formations of the Ogallala Group near Lubbock, TX (samples courtesy of Dr. Tom Lehman). Based on biostratigraphy, the Bridwell formation is Hemphillian (10.3-4.9 Ma) and the Couch is Clarendonian (13.6-10.3 Ma). DS data yield an MDA of 6.77 Ma thus restricting the sampled interval of the Bridwell to no older than 6.77 Ma In contrast, the MDA of the Couch formation sample is 27.1 Ma with no Miocene DS grains detected. Four Miocene DS grains are found in samples from Mescalero Ridge in SE New Mexico and they provide an 11.44 MDA for Ogallala Formation in this area. The combined DS data and lithologic (eolian) similarities suggest that the Ogallala of SE New Mexico is correlative to the upper Couch Formation of west Texas. The 6-8 Ma youngest grains in the Bridwell formation indicate a New Mexico Peralta tuff source, whereas significant late Cretaceous DS grains are likely derived from reworked Cretaceous or younger sedimentary rocks. The 11.44 Ma DS grains from the Llano Estacado may be derived from Socorro area volcanics or perhaps much more distal Yellowstone Hotspot Track eruptions in Idaho, although long transport of sanidine is tephra is problematic. As a whole there are multiple DS ages between the Oligocene and Eocene that could reflect derivation from several regional volcanic fields. In detail, age and K/Ca data of Trans-Pecos volcanic field sanidines provide the best matches to some of the DS data, thereby implying an overall southern source for the Ogallala sediments. This coupled with paleocurrent data supports a north flowing paleo-Pecos river system that has been proposed by Cather (2011). Several samples from north-central New Mexico that are mapped as Ogallala yield Pleistocene DS ages with grains likely sourced from Valles Caldera eruptions. The young ages demonstrate the difficulty of correctly mapping the Ogallala and suggest that these units are likely either the Blackwater Draw or Blanco formation.","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133853354","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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