Guidebook 67 - Geology of the Belen Area最新文献

{"title":"Geochronology of Proterozoic rocks of the Sandia-Manzano-Los Pinos Uplift: implications for the timing of crustal assembly of the southwestern United States","authors":"M. Holland, K. Karlstrom, T. Grambling, M. Heizler","doi":"10.56577/ffc-.161","DOIUrl":"https://doi.org/10.56577/ffc-.161","url":null,"abstract":"New U-Pb zircon geochronologic data from plutons in the Sandia-Manzano-Los Pinos uplift are in agreement with older data that there were two major plutonic episodes, one at 1.66-1.65 Ga and the other at 1.46-1.45 Ga. These plutons are manifestations of a regional polyphase tectonic evolution for New Mexico during the Mazatzal and Picuris orogenies, respectively. Paleoproterozoic magmatism involved a bimodal rhyolite-basalt section of the basal Manzano Group; a new U-Pb zircon ICPMS age of 1665±16 Ma on the Sevilleta Metarhyolite Ma agrees with published ID-TIMS ages of 1662±1 Ma for the Sevietta Metarhyolite and 1662±2 Ma for interlayered mafic volcanic rocks. New ICPMS ages of 1655±14 Ma for the Manzanita, 1661±17 Ma for the Ojito, and 1662±14 Ma for the Los Pinos plutons, combined with older U-Pb dates, suggest these plutons overlap in age across the entire uplift. The 1.65-1.66 Ga plutons are interpreted to represent a magmatic arc system where plutons were intruding their own volcanic edifice and also intruding developing syn-contractional, arc-related sedimentary basins. New ICPMS U-Pb zircon ages from Mesoproterozoic plutons yield 1453±12 Ma for the Sandia and 1456±13 Ma for the Priest pluton. These plutons overlap in age, are about 20 Ma older than previously thought, and were emplaced syntectonically during the Picuris orogeny. 40Ar/39Ar data from coarse-grained muscovite crystals associated with these plutons yield complementary geochronologic information. In some cases, the muscovite ages are more precise than those obtained from zircon. Paired with our refined zircon ages, cooling ages obtained from muscovite provide insight into the secular thermal architecture of the Sandia-Manzano-Los Pinos uplift. 161","PeriodicalId":243410,"journal":{"name":"Guidebook 67 - Geology of the Belen Area","volume":"64 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":"117116774","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 drainage area, basic hydrology and basic geology of the Abo Arroyo","authors":"D. Love, A. Rinehart","doi":"10.56577/ffc-.85","DOIUrl":"https://doi.org/10.56577/ffc-.85","url":null,"abstract":"","PeriodicalId":243410,"journal":{"name":"Guidebook 67 - Geology of the Belen Area","volume":"120 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":"124787272","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":"Day 3 Road Log: New Mexico travertine quarries and Salado Arroyo Carbonic Spring","authors":"L. Crossey, K. Karlstrom, A. Priewisch, J. Ricketts, B. Frey, S. Lucas, D. McCraw, A. Williams, P. L. Miller, J. Lardner, V. Blomgren","doi":"10.56577/ffc-.119","DOIUrl":"https://doi.org/10.56577/ffc-.119","url":null,"abstract":"","PeriodicalId":243410,"journal":{"name":"Guidebook 67 - Geology of the Belen 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":"127264841","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":"Episyenites in the Sevilleta National Wildlife Refuge, Socorro County, New Mexico: preliminary results","authors":"V. McLemore","doi":"10.56577/ffc-.255","DOIUrl":"https://doi.org/10.56577/ffc-.255","url":null,"abstract":"Brick-red episyenites are found in an outlier of Proterozoic-age rocks on the Sevilleta National Wildlife Refuge in central New Mexico. The term episyenite is used to describe altered rocks that were desilicified and metasomatized by alkali-rich fluids. Similar episyenites are found elsewhere in New Mexico and southern Colorado and are thought to be part of a Cambrian-Ordovician magmatic event that is documented throughout southern Colorado and New Mexico. Unlike episyenites in the Caballo and Burro Mountains, which contains moderate to high concentrations of rare earth elements (REE), uranium, and thorium; the episyenites in the Sevilleta National Wildlife Refuge have no economic potential. 255","PeriodicalId":243410,"journal":{"name":"Guidebook 67 - Geology of the Belen Area","volume":"190 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":"122615917","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":"U-Pb Monazite and 40Ar/39Ar data supporting polyphase tectonism in the Manzano Mountains: a record of both the Mazatzal (1.66-1.60 Ga) and Picuris (1.45 Ga) Orogenies","authors":"K. Karlstrom, M. L. Williams, M. Heizler, M. Holland, T. Grambling, J. Amato","doi":"10.56577/ffc-.177","DOIUrl":"https://doi.org/10.56577/ffc-.177","url":null,"abstract":"Proterozoic basement rocks of the Sandia-Manzano-Los Pinos Mountains record two phases of plutonism, at 1.66-1.65 Ga and 1.46-1.45 Ga. These episodes correspond to two episodes of pluton-enhanced regional metamorphism and deformation that collectively resulted in the development of top-to-the-north thrust sense shear zones referred to as the Manzano thrust belt. U-Pb monazite ages indicates that prograde aureole metamorphism took place at ~1.68-1.66 Ga and again at 1.45 Ga, and both are tied to regional fabric-forming episodes. 40Ar/39Ar dating of muscovite reveals a variable 1.45 Ga thermal overprint. “Cold blocks” (at 1.45 Ga) were not heated above 375°C at 1.45 Ga; they have muscovite ages of ~1.66 Ga and record cooling of 1.65 Ga pluton aureoles through 350-400°C shortly after pluton emplacement. “Hot” blocks are in thrust sheets containing 1.45 Ga plutons and these record more extensive 1.45 Ga monazite rim growth and muscovite cooling ages of 1.44-1.42 Ga. The presence of sillimanite and andalusite in contact aureoles of 1.65 Ga and 1.45 Ga plutons suggests both were emplaced at 2-4 kbar middle crustal depths. This area does not contain 1.5 Ga rocks correlative with the Trampas Group. The 1.60-1.50 Ga “tectonic gap” in magmatism and metamorphism in New Mexico is best explained by a 100-million-year period of erosion following the 1.65-1.60 Ga Mazatzal orogeny. Plate tectonic models to explain these and other regional data require two orogenic pulses: the 1.65-1.60 Ga Mazatzal orogeny and 1.45-1.35 Ga Picuris orogeny. Total observed strain reflects shortening that occurred during both events. The Picuris orogeny resulted in formation of the Monte Largo and other thrust-sense shear zones in New Mexico. Additional studies are needed to parse the metamorphic and deformational products of each event across New Mexico. 177","PeriodicalId":243410,"journal":{"name":"Guidebook 67 - Geology of the Belen Area","volume":"132 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":"121249202","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":"Megaflora and palynoflora associated with a late Pennsylvanian coal bed (Bursum Formation, Carrizo Arroyo, New Mexico, U.S.A.) and paleoenvironmental significance","authors":"W. DiMichele, J. Schneider, S. Lucas, C. Eble, H. Falcon-Lang, C. Looy, W. Nelson, Scott D. Elrick, D. Chaney","doi":"10.56577/ffc-.351","DOIUrl":"https://doi.org/10.56577/ffc-.351","url":null,"abstract":"The only known coal bed in the Late Pennsylvanian Bursum Formation crops out in Carrizo Arroyo, Valencia County, New Mexico. Biozonation using fossils of conodonts, insects and plants suggests a latest Pennsylvanian age. The coal was first reported by Darton in 1928, and palynofloras have been previously obtained from strata below and above it. Associated megaflora was noted but not illustrated. Here, we re-describe the coal-bearing interval in detail, describe and illustrate a palynoflora from the coal and some elements of the megaflora from above and below it. The peat body from which the coal is derived appears to have formed in an abandoned channel, possibly an oxbow lake or estuary. It is high in mineral matter and inertinite macerals. It may have formed during a widespread episode of Late Pennsylvanian tropical humid equability. This humid episode was relatively less intense in western Pangea than in central Pangea, where it led to thicker and more widespread peat formation. Long-term preservation of the peat body was likely facilitated by regional syndepositional tectonism. 351","PeriodicalId":243410,"journal":{"name":"Guidebook 67 - Geology of the Belen Area","volume":"17 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":"126865060","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":"Phylloid algal bioherms in the Atrasado formation near Cibola Springs","authors":"P. Scholle, D. Ulmer-Scholle","doi":"10.56577/ffc-.35","DOIUrl":"https://doi.org/10.56577/ffc-.35","url":null,"abstract":"","PeriodicalId":243410,"journal":{"name":"Guidebook 67 - Geology of the Belen Area","volume":"19 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":"116818696","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 Red Tanks formation (upper Pennsylvanian-lower Permian) in Sierra Lucero, New Mexico: A brief summary and history of study","authors":"B. Kues","doi":"10.56577/ffc-.116","DOIUrl":"https://doi.org/10.56577/ffc-.116","url":null,"abstract":"","PeriodicalId":243410,"journal":{"name":"Guidebook 67 - Geology of the Belen Area","volume":"215 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":"132020300","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":"Springs along the western Albuquerque Basin, New Mexico","authors":"E. Melis","doi":"10.56577/ffc-.128","DOIUrl":"https://doi.org/10.56577/ffc-.128","url":null,"abstract":"","PeriodicalId":243410,"journal":{"name":"Guidebook 67 - Geology of the Belen Area","volume":"173 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":"124247420","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 Pennsylvanian section at Priest Canyon, southern Manzano Mountains, New Mexico","authors":"S. Lucas, K. Krainer, D. Vachard","doi":"10.56577/ffc-.275","DOIUrl":"https://doi.org/10.56577/ffc-.275","url":null,"abstract":"A bstrAct — The Pennsylvanian section at Priest Canyon in the southern Manzano Mountains includes the type sections of units named by Myers and long applied to Pennsylvanian strata throughout the Manzano and Manzanita mountains. Detailed restudy indicates it is very similar to the Pennsylvanian section in the Cerros de Amado, ~60 km to the SW, so, the stratigraphic nomenclature introduced by Thompson in 1942 and elaborated by Rejas in 1965 and Lucas, Krainer and Barrick in 2009, can be applied at Priest Canyon. The base of this section is the ~70 m thick Sandia Formation, mostly covered slopes and beds of sandstone, limestone and conglomerate that are in fault contact with the Proterozoic basement. The overlying Gray Mesa Formation (= Los Moyos Limestone) is ~192 m thick and mostly cherty limestone, divided into three members (ascending): (1) Elephant Butte Member, ~24 m of limestone and shale; (2) Whiskey Canyon Member, ~84 m of cherty limestone; and (3) Garcia Member, ~84 m of non-cherty limestone and shale with lesser amounts of cherty limestone, sandstone and conglomerate. The overlying Atrasado Formation (= Wild Cow Formation) is ~272 m thick and divided into eight members (ascending): (1) Bartolo Member, ~66 m of slope-forming shale with thin beds of sandstone, limestone and conglomerate; (2) Amado Member, ~9 m of bedded, cherty, brachiopod-rich limestone; (3) Tinajas Member, ~115 m of shale with interbedded limestone and sandstone; (4) Council Spring Member, ~23 m of mostly algal limestone without chert; (5) Burrego Member, ~26 m of arkosic red beds and limestone; (6) Story Member, ~6 m of limestone; (7) Del Cuerto Member, ~16 m of arkosic red beds and limestone; and (8) Moya Member, ~11 m of bedded limestone and shale. The Pennsylvanian section is overlain by the Lower Permian Bursum Formation, which is at least 30 m of interbedded red-bed mudstone, sandstone, conglomerate and limestone. Deposition of the Sandia, Gray Mesa, Atrasado and Bursum formations took place mostly in normal, shallow-marine platform settings and in coastal, nonmarine fluvial paleoenvironments. At their type sections, Myers’ members of the “Wild Cow Formation” clearly are fusulinid-based, biostratigraphic units, not lithostratigraphic units, as their contacts are not drawn at laterally traceable lithologic changes. Thus, Sol se Mete Member = Missourian fusulinids, Pine Shadow Member = early Virgilian fusulinids, and La Casa Member = middle-late Virgilian fusulinids. We thus recommend abandonment of all of Myers’ Pennsyl- vanian lithostratigraphic terms because they are either synonyms of earlier named units or do not identify useful lithostratigraphic units. Available biostratigraphic data and regional correlations indicate that at Priest Canyon, the Sandia Formation is late Atokan-Desmoinesian, the Gray Mesa Formation and lower Atrasado Formation are Desmoinesian, and the rest of the Atrasado Formation is Missourian-Virgilian, with its uppermost strata Wolfcampian.","PeriodicalId":243410,"journal":{"name":"Guidebook 67 - Geology of the Belen Area","volume":"17 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":"121692991","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}