{"title":"40AR/39AR K-FELDSPAR THERMOCHRONOLOGY OF PROTEROZOIC TO DEVONIAN METASOMATIC K-FELDSPAR IN BASEMENT ROCKS, SANGRE DE CRISTO RANGE, NEW MEXICO, USA","authors":"R. Sanders, M. Heizler","doi":"10.56577/sm-2004.724","DOIUrl":"https://doi.org/10.56577/sm-2004.724","url":null,"abstract":"","PeriodicalId":142738,"journal":{"name":"New Mexico Geological Society, 2004 Annual Spring Meeting, Proceedings Volume","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127603487","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":"FIRST RECORD OF THE INVERTEBRATE ICHNOFOSSIL HAMIPES FROM THE LOWER PERMIAN OF NEW MEXICO","authors":"A. J. Lerner, S. Lucas, A. Hunt","doi":"10.56577/sm-2004.699","DOIUrl":"https://doi.org/10.56577/sm-2004.699","url":null,"abstract":"New Mexico’s Early Permian vertebrate track record has received considerable attention over the last decade and is now recognized as a global standard. However, its Early Permian invertebrate ichnofaunas are less well known and have been relatively understudied. Here, we document an occurrence of Hamipes , an invertebrate ichnotaxon that has previously been unreported from New Mexico. The specimen (NMMNH P-32661) is from New Mexico Museum of Natural History locality 1339, which is in the upper part of the Sangre de Cristo Formation (Wolfcampian) of San Miguel County, New Mexico. A diverse vertebrate ichnofauna is present, dominated by typical Early Permian ichnogenera such as Dromopus and Batrachichnus . An invertebrate ichnofauna is also present, consisting of ichnogenera such as Paleohelcura and Dendroidichnites . The paleoenvironment is interpreted as a sheet-flood deposit on an extensive floodplain. transect of the state. The southernmost ichnoassemblage, centered near Las Cruces, is found in coastal tidal flat facies of the Robledo Mountains Formation that show periodic freshwater influence. This diverse ichnoassemblage is distinct in having four arthropod ichnotaxa, including Tonganoxichnus robledoensis , which are known only from their type localities within the Robledo Mountains Formation. Another ichnoassemblage, from the central part of the state around the Lucero uplift and Socorro, is low in ichnodiversity. It is found in transitional brackish waterinfluenced facies low in the Abo Formation. The characteristic ichnotaxon within this ichnoassemblage is Palaeophycus , an infaunal burrow attributed to polychaete makers. Another ichnoassemblage occurs in the northern part of the state, near Villanueva in San Miguel County. It is found within floodplain facies of the Sangre de Cristo Formation that were far inland during Wolfcampian time. The ichnodiversity of this arthropod-dominated ichnoassemblage is less than that of the southern ichnoassemblage. However, it may contain different ichnotaxa in addition to Hamipes . Continued investigation is needed to further determine the compositional similarities and differences between these ichnoassemblages.","PeriodicalId":142738,"journal":{"name":"New Mexico Geological Society, 2004 Annual Spring Meeting, Proceedings Volume","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126288039","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":"GEOARCHAEOLOGY AND PALEOENVIRONMENTS OF THE FIRST PEOPLING OF THE LLANO ESTACADO","authors":"V. Holliday","doi":"10.56577/sm-2004.687","DOIUrl":"https://doi.org/10.56577/sm-2004.687","url":null,"abstract":"","PeriodicalId":142738,"journal":{"name":"New Mexico Geological Society, 2004 Annual Spring Meeting, Proceedings Volume","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130012784","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":"AN ALTERNATIVE MODEL FOR LARAMIDE MAGMATISM IN THE SW US: IMPORTANCE OF LATE JURASSIC CONTINENTAL RIFTING","authors":"N. McMillan, T. Lawton, C. Cowee","doi":"10.56577/sm-2004.710","DOIUrl":"https://doi.org/10.56577/sm-2004.710","url":null,"abstract":"","PeriodicalId":142738,"journal":{"name":"New Mexico Geological Society, 2004 Annual Spring Meeting, Proceedings Volume","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133562427","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":"MISSING ARC-VOLCANIC INPUT TO UPPER CRETACEOUS FORELAND BASIN DEPOSITS OF THE MEXCALA FORMATION, SOUTHERN MEXICO","authors":"Daniel F Dehn, M. Elrick, R. Molina-Garza","doi":"10.56577/sm-2004.673","DOIUrl":"https://doi.org/10.56577/sm-2004.673","url":null,"abstract":"During the Jurassic through early Tertiary, the western margin of North America was a convergent plate boundary with the Farallon plate subducting below the North American Plate (Sevier-Laramide orogeny). Convergence is well evidenced in the western United States by arc volcanism, the fold and thrust belt, and foreland basin development (Western Interior Seaway). Infilling of the foreland from the fold and thrust belt to the west included numerous volcanic ash beds. In contrast to the western U.S. record, evidence for arc volcanism and the proximity of the arc to southern Mexico is not well understood due to limited stratigraphic, biostratigraphic, structural studies and due to overprinting by postLaramide deformation. One method used to address the proximity of arc volcanism to the Mexican craton is petrographic provenance studies of Cretaceous foreland basin sandstones. This study focuses on part of the Upper Cretaceous (Cenomanian-Campanian) turbiditic sandstones of the Mexcala Formation in southern Mexico (Guerrero state). Initial field observations from turbidite paleoflow indicators suggest northwest to westward transport directions. Preliminary petrographic results indicate abundant sandstone grains from plutonic and metamorphic sources (deformed quartz, white mica, biotite, epidote). However, little or no volcanically derived grains (pyroxenes, amphiboles, alkali plagioclase, volcanic lithics) have been observed. This apparent absence of volcanic input may be interpreted as the result of three possible scenarios: 1) the volcanic arc was too far removed from the foreland basin study area; 2) some physical barrier prevented detrital volcanic influx (i.e., fold and thrust belt or fault blocking); or 3) an absence of volcanic activity/erosion during the studied further petrographic m-thick Mexcala in coeval foreland the constrain tectonic models involving volcanic arc development adjacent to the","PeriodicalId":142738,"journal":{"name":"New Mexico Geological Society, 2004 Annual Spring Meeting, Proceedings Volume","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127383661","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. Heckert, P. Hester, Rene C. Berkhoudt, W. S. Mathias
{"title":"40,000 FOSSILS ONLINE: THE NEW MEXICO MUSEUM OF NATURAL HISTORY AND SCIENCE’S DIGITAL DATABASE AS A TOOL FOR GEOSCIENTISTS AND EDUCATORS","authors":"A. Heckert, P. Hester, Rene C. Berkhoudt, W. S. Mathias","doi":"10.56577/sm-2004.685","DOIUrl":"https://doi.org/10.56577/sm-2004.685","url":null,"abstract":"","PeriodicalId":142738,"journal":{"name":"New Mexico Geological Society, 2004 Annual Spring Meeting, Proceedings Volume","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132160431","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. W. Love, N. Dunbar, W. Mcintosh, S. Connell, J. Sorrell, D. Pierce
{"title":"PLIO-PLEISTOCENE FAULTS AND UNCONFORMITIES IN AND BETWEEN THE ARROYO OJITO AND SIERRA LADRONES FORMATIONS AND POSTSANTA FE GROUP PIEDMONT, MESA DEL SOL AND LLANO DE MANZANO, CENTRAL ALBUQUERQUE BASIN, NEW MEXICO","authors":"D. W. Love, N. Dunbar, W. Mcintosh, S. Connell, J. Sorrell, D. Pierce","doi":"10.56577/sm-2004.701","DOIUrl":"https://doi.org/10.56577/sm-2004.701","url":null,"abstract":"","PeriodicalId":142738,"journal":{"name":"New Mexico Geological Society, 2004 Annual Spring Meeting, Proceedings Volume","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130452628","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":"MAPPING FAULTS IN THE LIGHTNING DOCK KNOWN GEOTHERMAL AREA, ANIMAS VALLEY, NEW MEXICO USING SOIL CO2 FLUX MEASUREMENTS","authors":"K. Mclin, D. Norman, P. Kyle","doi":"10.56577/sm-2004.708","DOIUrl":"https://doi.org/10.56577/sm-2004.708","url":null,"abstract":"","PeriodicalId":142738,"journal":{"name":"New Mexico Geological Society, 2004 Annual Spring Meeting, Proceedings Volume","volume":"17 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120909392","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":"HYDROTHERMAL ALTERATION ASSOCIATED WITH A POSSIBLE COPPER-MOLYBDENUM PORPHYRY SYSTEM, WEBSTER PASS AREA, PARK AND SUMMIT COUNTIES, COLORADO.","authors":"Josh Crook","doi":"10.56577/sm-2004.672","DOIUrl":"https://doi.org/10.56577/sm-2004.672","url":null,"abstract":"","PeriodicalId":142738,"journal":{"name":"New Mexico Geological Society, 2004 Annual Spring Meeting, Proceedings Volume","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116272419","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}