Proceedings Volume: "Hydrology and History of the Rio Grande", New Mexico Geological Society, 2013 Annual Spring Meeting最新文献

{"title":"U-Pb Geochronology of Proterozoic Granitoids in the Southern Sangre De Cristo Mountains, New Mexico","authors":"J. Lindline, D. Cedillo, A. Romero","doi":"10.56577/sm-2013.80","DOIUrl":"https://doi.org/10.56577/sm-2013.80","url":null,"abstract":"The Hermit’s Peak batholith, a Proterozoic metamorphic-plutonic massif in the southern Santa Fe Range of the southern Sangre de Cristo Mountains, is located in the tectonic transition zone between the Yavapai and Mazatzal Precambrian provinces. We conducted U-Pb zircon geochronology on five previously undated Hermit’s Peak batholith intrusions to establish the timing of magmatism relative to Proterozoic deformation events. The Gallinas Canyon felsite is a fine- to medium-grained quartzofeldspathic gneiss that yielded a date of 1.705±0.017 Ga (n=24). The felsite displays a strong penetrative steeply dipping east-northeast trending schistocity and gneissic layering that is parallel to the axial surface of tight to isoclinal folds. The felsite is frequently interlayered with fine- to medium-grained amphibolite and commonly intruded by K-feldspar megacrystic alaskite pegmatites. The approximately 30 km 2 Hermit’s Peak granite is a coarse equigranular and variably foliated granite. At some locations the granite displays a strong solid-state foliation, in others a modest submagmatic to magmatic foliation, and a lack of a foliation in others. A weakly foliated sample of the Hermit’s Peak granite from Porvenir Canyon yielded a date of 1.700±12.1 Ga (n=24). The Evergreen Valley tonalite is a coarse equigranular strongly foliated garnet-bearing hornblende-biotite tonalite that crystallized at 1.736±0.014 Ga (n=24). The tonalite was intruded by the Evergreen Valley granite-gabbro complex which yielded ages of 1.448±0.012 Ga (n=43) and 1.450±11.9 Ga (n=32), respectively. The granite-gabbro complex is layered on the macroscale but lacks an internal fabric. Both the gabbro and granite are coarse equigranular and display isotropic petrofabrics. Our results illustrate the episodic nature of magmatism in the Hermit’s Peak batholith at circa 1.7 Ga and 1.4 Ga as well as the prevalence of pre-1.45 Ga deformation. Our ongoing studies are addressing the structural relationship between the Hermit’s Peak granite and its host rocks as well as the petrogenesis of the Evergreen Valley gabbro-granite complex to further understand the tectonic setting of 1.7 Ga and 1.4 Ga magmatism in the Santa Fe Range.","PeriodicalId":363585,"journal":{"name":"Proceedings Volume: \"Hydrology and History of the Rio Grande\", New Mexico Geological Society, 2013 Annual Spring Meeting","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117209580","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":"Troubled Time","authors":"M. Heizler","doi":"10.56577/sm-2013.89","DOIUrl":"https://doi.org/10.56577/sm-2013.89","url":null,"abstract":"","PeriodicalId":363585,"journal":{"name":"Proceedings Volume: \"Hydrology and History of the Rio Grande\", New Mexico Geological Society, 2013 Annual Spring Meeting","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121298202","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":"Signals of a Changing Climate in Pecos River Streamflow","authors":"Manuel Salgado, D. Gutzler","doi":"10.56577/sm-2013.58","DOIUrl":"https://doi.org/10.56577/sm-2013.58","url":null,"abstract":"","PeriodicalId":363585,"journal":{"name":"Proceedings Volume: \"Hydrology and History of the Rio Grande\", New Mexico Geological Society, 2013 Annual Spring Meeting","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130725414","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":"Mineralogy and Geochemistry of the Gallinas Mountains, New Mexico","authors":"Zachary B. Vance, V. Lueth, A. Campbell","doi":"10.56577/sm-2013.76","DOIUrl":"https://doi.org/10.56577/sm-2013.76","url":null,"abstract":"","PeriodicalId":363585,"journal":{"name":"Proceedings Volume: \"Hydrology and History of the Rio Grande\", New Mexico Geological Society, 2013 Annual Spring Meeting","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131703817","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 Court Case From Hell: Aamodt as Social Drama","authors":"M. Agar","doi":"10.56577/sm-2013.49","DOIUrl":"https://doi.org/10.56577/sm-2013.49","url":null,"abstract":"","PeriodicalId":363585,"journal":{"name":"Proceedings Volume: \"Hydrology and History of the Rio Grande\", New Mexico Geological Society, 2013 Annual Spring Meeting","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123954982","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 in Waters of the Ojo Caliente Area, Taos County, New Mexico","authors":"Tony Benson, R. Gervason","doi":"10.56577/sm-2013.43","DOIUrl":"https://doi.org/10.56577/sm-2013.43","url":null,"abstract":"","PeriodicalId":363585,"journal":{"name":"Proceedings Volume: \"Hydrology and History of the Rio Grande\", New Mexico Geological Society, 2013 Annual Spring Meeting","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129655408","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":"Angulithes fleuriausianus from the Paguate Sandstone, Sandoval County, New Mexico: a Very Rare Nautiloid in North America","authors":"P. Sealey, S. Lucas","doi":"10.56577/sm-2013.81","DOIUrl":"https://doi.org/10.56577/sm-2013.81","url":null,"abstract":"Together with numerous ammonites, only one specimen of the extremely rare (in North America) nautiloid Angulithes fleuriausianus (d’Orbigny, 1840) was recovered from the basal part of the Upper Cretaceous (Cenomanian) Paguate Sandstone southeast of Mesa Prieta, in Sandoval County, New Mexico. Ammonites collected from this interval include Acanthoceras amphibolum, Tarrantoceras sellardsi, and Desmoceras aff. D. japonicum. This places A. fleuriausianus from the Paguate in the study area in the A. amphibolum Zone, which is of middle Cenomanian age. The shell of this nautiloid specimen has a rounded venter, a small umbilicus, very involute coiling, and a compressed and subtrigonal whorl section, as in Angulithes fleuriausianus (Cobban and Kennedy, 1993, p. E2). The slightly sinuous suture extends from the umbilicus, and crosses the flanks with a slight concavity, forming a broad, shallow lobe that then curves forward across the venter to form a shallow ventral saddle. Cenomanian nautiloids are rare in the Western Interior of the United States. Here, Angulithes fleuriausianus is only known from the Acanthoceras amphibolum Zone in the Paguate Sandstone. Previous records (three specimens) of A. fleuriausianus are from the Paguate Sandstone in Cibola and McKinley counties, New Mexico (Cobban and Kennedy, 1993, p. E1-E2). This is the first report of this nautiloid from Sandoval County. A. fleuriausianus has also been reported from the Cenomanian of England, France, Germany, Tunisia and southern India.","PeriodicalId":363585,"journal":{"name":"Proceedings Volume: \"Hydrology and History of the Rio Grande\", New Mexico Geological Society, 2013 Annual Spring Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128786109","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":"40Ar/39Ar Muscovite Thermochronology Of Petaca District Pegmatites, Northern, NM","authors":"L. Gaston, M. Heizler","doi":"10.56577/sm-2013.75","DOIUrl":"https://doi.org/10.56577/sm-2013.75","url":null,"abstract":"40Ar/39Ar muscovite dates from pegmatites of the Petaca District in the Tusas Mts, NM reveal cooling ages between 1390 and 1334 Ma. The Petaca District is located along the eastern boundary of Rio Arriba County in northern NM. A once heavily mined area due to the abundance of muscovite; the Petaca district contains more than 200 pegmatites that may also contain important concentrations of REE minerals. We hypothesize that the coarse-grained muscovite will have 40Ar* closure temperatures in excess of 400°C, and depending upon crustal emplacement depth, they might record the intrusion age of the pegmatites. We test this hypothesis by comparing ages of coarse-grained muscovite to ages of finer grained muscovite within metamorphic host rocks. The pegmatite muscovites from 13 samples have overall flat age spectra with integrated ages between 1390 and 1334 Ma and broadly group at 1390, 1370, 1360 and 1335 Ma. The finer grained host rock muscovites from three samples have integrated dates of 1346 and 1332 Ma. Because the basement muscovites are younger than the pegmatite muscovites, we cannot readily conclude that the pegmatite muscovites record intrusion ages. Endmember interpretations range from all pegmatites being emplaced at 1390 Ma or older with all ages equaling cooling ages versus each age recording an intrusion over a ~60 Ma duration. Similar muscovite grain size with variable apparent age would argue that 40Ar* closure temperature is not a simple function of physical grain size. We expect to employ in situ 40Ar/39Ar dating and electron microprobe monazite U+Th/Pb dating to better establish intrusion age. Regionally, the muscovite data contribute to the thermochronology database of New Mexico and ca. 1.4-1.35 Ga dates fit well with existing Tusas Mt. data. Expansion of pegmatite dating to more southern and cooler 1.4 Ga basement should identify where muscovite thermochronology can well approximate intrusion ages.","PeriodicalId":363585,"journal":{"name":"Proceedings Volume: \"Hydrology and History of the Rio Grande\", New Mexico Geological Society, 2013 Annual Spring Meeting","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129036886","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":"Covariability and Interannual Variability of June Wild Fires and Atmospheric Aerosols","authors":"L. Barrett, D. Gutzler","doi":"10.56577/sm-2013.60","DOIUrl":"https://doi.org/10.56577/sm-2013.60","url":null,"abstract":"","PeriodicalId":363585,"journal":{"name":"Proceedings Volume: \"Hydrology and History of the Rio Grande\", New Mexico Geological Society, 2013 Annual Spring Meeting","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127622625","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":"Here We Go Again","authors":"Thomas Maddock III.","doi":"10.56577/sm-2013.39","DOIUrl":"https://doi.org/10.56577/sm-2013.39","url":null,"abstract":"The f i f th annual Nat ional Design Awards , presented at a gala ce remony at CooperHewit t , Nat ional Design M u s e u m on October 19, held its share of surprises this year. In an unprecedented t ie. Rick Joy and Polshek Partnership both w o n the award in the archi tecture category, prevai l ing over the other t w o f inal ists, Joseph E. Spear and Rafael Viholy. \"The architecture category presented a hard cho ice, \" said juror and Polshek Partnership's William J . Clinton Presidential Center, in Little Rock, Arkansas, 2004 (left) and Rick Joy's Tubac House, Tubac, Arizona, 2001 (above).","PeriodicalId":363585,"journal":{"name":"Proceedings Volume: \"Hydrology and History of the Rio Grande\", New Mexico Geological Society, 2013 Annual Spring Meeting","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122373114","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}