Guidebook 66 - Geology of the Las Vegas Area最新文献

{"title":"Revised location for the Yavapai-Mazatzal crustal province boundary in New Mexico: Hf isotopic data from Proterozoic rocks of the Nacimiento Mountains","authors":"T. Grambling, M. Holland, K. Karlstrom, G. Gehrels, M. Pecha","doi":"10.56577/ffc-.175","DOIUrl":"https://doi.org/10.56577/ffc-.175","url":null,"abstract":"Lithospheric growth of southwestern Laurentia during the Paleoproterozoic has been hypothesized to have involved addition of two dominantly juvenile crustal provinces: the 1.8–1.7 Ga Yavapai province and the 1.7–1.6 Ga Mazatzal province. Timing of assembly of these two crustal provinces has been stated to have occurred during the 1.72–1.68 Ga Yavapai orogeny and 1.65–1.60 Ga Mazatzal orogeny, with both provinces undergoing high temperature deformation and metamorphism at middle crustal depths accompanying Mesoproterozoic intrusions from 1.45–1.35 Ga. The boundary between provinces remains poorly understood, but has been inferred to lie along the northern edge of the Jemez volcanic lineament and through the Nacimiento uplift in northern New Mexico. This basement-cored Laramide uplift exposes a 53-km-long north-south transect dominated by Paleoproterozoic and Mesoproterozoic granite, providing an ideal locality to examine age and origin of continental lithosphere across this proposed boundary on a local scale. A quartzite metasedimentary unit from the northern Nacimiento that is intruded by ca. 1696 Ma granite was analyzed with U-Pb and Hf isotopic analyses of zircons. The detrital zircon data show a narrow unimodal age peak at 1720 Ma and a maximum depositional age of ~1.7 Ga. Detrital zircons from this sample yield initial epsilon Hf (ɛHf(t)) values ranging from +6.4 to +14.2 suggesting an isotopically juvenile ca. 1.7–1.8 Ga source region for the quartzites. Detrital zircon ages suggest a correlation with the greater Hondo Group and equivalents of northern New Mexico. A 1449 ±12 Ma granite from the southern Nacimiento Mountains has initial epsilon Hf (ɛHf(t)) values of +2.6 to +10.5 suggesting that the lower crustal melt source region contained 1.7–1.8 Ga (Yavapai) crust that was partially melted by and may have mixed with juvenile 1.4 Ga melt. Together these data suggest that >1.7 Ga (Yavapai) crustal province rocks extend in the subsurface south of the southern Nacimiento Mountains. (Karlstrom and Humphreys, 1998; Shaw and Karlstrom., 1999; Karlstrom and Williams, 2006). 2) Some models suggest the provinces are made up of dominantly juvenile additions to the lithosphere (1.7–1.8 for Yavapai and 1.7–1.6 Ga for Mazatzal; Bowring and Karlstrom, 1990), while others have proposed there is significant older crust in the subsurface, i.e. pre-1.8 Ga for the Yavapai (Bickford and Hill, 2007; Karlstrom et al., 2007) and pre-1.7 Ga for the Mazatzal province (Amato, 2008). 3) The timing of accretionary deformation(s) and location of any accretionary sutures is debated. Some models envision suturing of terranes to have accompanied and closely followed lithospheric growth during the 1.72–1.68 Ga Yavapai and 1.65–1.60 Ga Mazatzal orogenies (Whitmeyer and Karlstrom, 2007); others question the arc accretion model as the mechanism for crustal growth (Bickford and Hill, 2007; c.f. Karlstrom et al., 2007); and some suggest final suturing of the Mazatzal terrane i","PeriodicalId":337295,"journal":{"name":"Guidebook 66 - Geology of the Las Vegas Area","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121575923","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":"On a diverse tetrapod ichnofauna from early Permian red beds in San Miguel County, north-central New Mexico","authors":"S. Voigt, S. Lucas","doi":"10.56577/ffc-.241","DOIUrl":"https://doi.org/10.56577/ffc-.241","url":null,"abstract":"—Late paleozoic red beds of the Sangre de Cristo Formation and overlying Yeso Group in San Miguel County in north-central New Mexico are locally rich in fossil tetrapod footprints. the largest public collection houses about 200 specimens with tetrapod footprints from 16 different localities within the study area. the assemblage includes tracks of Batrachich- nus (Woodworth, 1900), Limnopus (Marsh, 1894), Ichniotherium (pohlig, 1892), Tambachichnium (Müller, 1954), Dimetropus (Romer and price, 1940), and Dromopus (Marsh, 1894). Less well recorded are tracks that are compared with Matthewichnus (Haubold, 1970), Notalacerta (butts, 1891), and Hyloidichnus (Gilmore, 1927). this diverse ichnofauna is referred to as microsaur, temnospondyl, diadectomorph, eupelycosaur, non-diapsid eureptile (‘captorhinomorph’) and parareptile or diapsid eureptile trackmakers. in most cases, the track-trackmaker correlation is well supported by tetrapod body fossil remains from closely associated beds of the Sangre de Cristo Formation. based on vertebrate tracks, the upper part of the Sangre de Cristo Formation in the study area is suggested to be of late early permian (late artinskian/late Wolfcampian) age.","PeriodicalId":337295,"journal":{"name":"Guidebook 66 - Geology of the Las Vegas Area","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122289672","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 Goodnight-Loving trail: Longhorns on the move","authors":"K. Zeigler","doi":"10.56577/ffc-.98","DOIUrl":"https://doi.org/10.56577/ffc-.98","url":null,"abstract":"","PeriodicalId":337295,"journal":{"name":"Guidebook 66 - Geology of the Las Vegas Area","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128300272","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":"Geology and mineral resources of the Laughlin Peak mining district, Colfax County, New Mexico","authors":"V. McLemore","doi":"10.56577/ffc-.277","DOIUrl":"https://doi.org/10.56577/ffc-.277","url":null,"abstract":"—The Laughlin Peak district in the Laughlin Peak-Chico Hills igneous complex is in the southern portion of the younger Raton-Clayton volcanic field, southeast of Raton in northeastern New Mexico, along the Jemez Lineament, and is part of the North American Cordilleran alkaline-igneous belt that extends from Alaska and British Columbia southward into New Mexico and eastern Mexico. The Laughlin Peak-Chico Hills complex was emplaced just before or at the beginning of Rio Grande rift extension (22–37 Ma). Host rocks in the Laughlin Peak district are alkaline, predominantly ferroan, predominantly metaluminous to peralkaline and plot as A-type granites, WPG (within-plate granites), and active continental margins zone. The igneous rocks exhibit typical light rare earth elements (REE) enriched chondrite-normalized REE patterns of alkaline rocks with no europium anomaly. The alkaline igneous rocks in the district are similar in composition and texture to igneous rocks found in two other REE districts in the North American Cordilleran alkaline-igneous belt (also known as the Great Plains Margin or GPM) in New Mexico, the Gallinas and Cornudas Mountains. Although there has been no mineral production from the Laughlin Peak district, three types of mineral deposits have been identified: (1) carbonatites, (2) breccia pipe deposits, and (3) Th-REE hydrothermal veins. Since 1987, only minor exploration of these deposits occurred because of low commodity prices and environmental concerns. However, as the current demand for critical commodities like REE has increased, new exploration programs have encouraged additional research on the geology of these deposits. Thorium, REE and possibly gold are potential commodities in the Laughlin Peak district, but additional drilling is required to fully understand the mineral resource potential. Detailed studies on the mineralogy and paragenesis also are required in the Laughlin Peak district and should be completed before advanced exploration. These studies will greatly enhance exploration efforts. The diversity of igneous rocks and associated mineral deposits along the boundary of the Great Plains with the Southern Rocky Mountain and Basin and Range provinces suggests that this region is characterized by multiple pulses of highly fractionated and differentiated magmas. In the Laughlin Peak-Chico Hills complex, two different chemical trends of phonolite are found that could be a result of differences in fractionation. Both upper mantle and lower crustal source rocks may be involved, although in the Laughlin Peak-Chico Hills complex, a lower crustal source with possible mixing of upper crustal rocks is suggested by geochemical data. Deep-seated fracture systems or crustal lineaments, such as the Jemez Lineament, apparently channeled the magmas and hydrothermal fluids. Once magmas and metal-rich fluids reached shallow levels, the distribution and style of these intrusions, as well as the resulting associated mineral deposits, ","PeriodicalId":337295,"journal":{"name":"Guidebook 66 - Geology of the Las Vegas Area","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126820814","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":"Petroleum hydrocarbon remediation of Cretaceous vertical beds on the western flank of the Las Vegas Basin","authors":"S. Von Gonten, T. Haller","doi":"10.56577/ffc-.102","DOIUrl":"https://doi.org/10.56577/ffc-.102","url":null,"abstract":"","PeriodicalId":337295,"journal":{"name":"Guidebook 66 - Geology of the Las Vegas Area","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121424798","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":"Regional acequia systems and organizations","authors":"E. Romero","doi":"10.56577/ffc-.122","DOIUrl":"https://doi.org/10.56577/ffc-.122","url":null,"abstract":"","PeriodicalId":337295,"journal":{"name":"Guidebook 66 - Geology of the Las Vegas Area","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130126933","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":"Second-day road log: Storrie Lake State Park to Buena Vista Ranch, Rio Mora National Wildlife Refuge,\u0000Watrous, and Fort Union National Monument","authors":"J. Lindline, M. Petronis, J. Zebrowski","doi":"10.56577/ffc-.54","DOIUrl":"https://doi.org/10.56577/ffc-.54","url":null,"abstract":"","PeriodicalId":337295,"journal":{"name":"Guidebook 66 - Geology of the Las Vegas Area","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121995461","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":"Marine invertebrates from the Sandia Formation near Holman Hill, Mora County","authors":"B. Kues","doi":"10.56577/ffc-.86","DOIUrl":"https://doi.org/10.56577/ffc-.86","url":null,"abstract":"","PeriodicalId":337295,"journal":{"name":"Guidebook 66 - Geology of the Las Vegas Area","volume":"65 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128241224","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":"Caves and cribs: The painted ladies of Fort Union","authors":"L. Gonzales-Meredith","doi":"10.56577/ffc-.100","DOIUrl":"https://doi.org/10.56577/ffc-.100","url":null,"abstract":"","PeriodicalId":337295,"journal":{"name":"Guidebook 66 - Geology of the Las Vegas Area","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132733809","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":"Type section of the Lower Permian Glorieta Sandstone, San Miguel County, New Mexico","authors":"K. Krainer, S. Lucas","doi":"10.56577/ffc-.205","DOIUrl":"https://doi.org/10.56577/ffc-.205","url":null,"abstract":"in central new Mexico, the lower permian Glorieta Sandstone is a relatively thin (<100 m thick), prominent, sandstone-dominated stratigraphic unit near the top of the permian section. it generally consists of yellowish brown to light gray, very fine to fine-grained, well-sorted quartzose sandstone that is often crossbedded but also includes beds that are ripple laminated and/or tabular bedded. The type section of the Glorieta Sandstone is on Glorieta Mesa near rowe, nM, in San Miguel county. Here, the Glorieta Sandstone is 51 m thick, entirely composed of sandstone, including the following: trough-crossbedded sandstone representing eolian sand dunes, ripple-laminated sandstone representing wind ripples, and horizontally laminated sandstone and massive sandstone, also representing eolian deposits. In the lower part crossbedded sandstone of eolian sand dunes alternates with rippleand horizontally laminated sandstone interpreted as interdune deposits. The upper part of the type section is dominated by ripple-laminated, horizontally laminated and massive sandstone, interpreted as eolian sand sheet deposits, with subordinate, intercalated crossbedded sandstone representing eolian dunes. Sandstone of the Glorieta Sandstone at its type section is characterized by high textural (well-sorted and rounded to well-rounded grains) and compositional maturity (mainly quartz arenite, subordinately subarkose). and buff quartzose sandstone above Yeso strata and below limestone of the San andres Formation. needham and Bates (1943, p. 1664) concluded that “on account of its wide distribution, persistence of lithology, bold topographic expression, and stratigraphic importance, the Glorieta is considered to be a formation.” new Mexico Geological Society Guidebook, 66th Field conference, Geology of the Meadowlands, las Vegas region, 2015, p. 205–210","PeriodicalId":337295,"journal":{"name":"Guidebook 66 - Geology of the Las Vegas Area","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133655822","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}