Proceedings Volume: "Evaluating How Continental Sedimentary Basins Fill: Development and Preservation of Sedimentary Successions", New Mexico Geological Society, 2012 Annual Spring Meeting最新文献

{"title":"A study of the holotype of Allotrioceras Flower 1955","authors":"J. McDonnell","doi":"10.56577/sm-2012.161","DOIUrl":"https://doi.org/10.56577/sm-2012.161","url":null,"abstract":"","PeriodicalId":240412,"journal":{"name":"Proceedings Volume: \"Evaluating How Continental Sedimentary Basins Fill: Development and Preservation of Sedimentary Successions\", New Mexico Geological Society, 2012 Annual Spring Meeting","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132390370","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":"A Juliform Millipede From The Upper Pennsylvanian (Virgilian) Bursum Formation, Carrizo Arroyo, Central New Mexico","authors":"J. Spielmann, S. Lucas","doi":"10.56577/sm-2012.223","DOIUrl":"https://doi.org/10.56577/sm-2012.223","url":null,"abstract":"Fossil millipedes are rare elements the Paleozoic assemblages of western North America and when found are often so poorly preserved that distinguishing diagnostic features proves impossible. The presence of a millipede at Carrizo Arroyo (NMMNH locality 3433), a Virgilian locality in the Red Tanks Member of the Bursum Formation with an extensive invertebrate fauna, was initially described as a singular occurrence. However, a recent reexamination of the collected material from Carrizo Arroyo has led to the discovery of five additional millipede specimens. These specimens range in completeness from a dozen midbody segments to a specimen that preserves the first 48 segments of an individual, in part and counterpart, including the individual’s head. All millipede specimens share consistent segment morphology and thus pertain to a single taxon. In contrast to modern millipedes, which are diagnosed at the species-level based on genital structure, fossil millipedes are distinguished based on segment ornamentation. The Carrizo millipede possesses the following diagnostic characters: a mid-segment ridge running dorsoventrally the height of the segment that serves to separate the prozonite and the metazonite; and no additional ornamentation of the segments. The Carrizo millipede is only one of three examples of Paleozoic millipedes known from western North America; others include material from the Upper Pennsylvanian to Lower Permian limestones of Hamilton County, Kansas and the Upper Pennsylvanian Kinney Brick quarry of central New Mexico. Thus, these new millipede specimens add significantly to our understanding of Paleozoic millipedes and help to fill gaps in the sparse fossil record of this group.","PeriodicalId":240412,"journal":{"name":"Proceedings Volume: \"Evaluating How Continental Sedimentary Basins Fill: Development and Preservation of Sedimentary Successions\", New Mexico Geological Society, 2012 Annual Spring Meeting","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127243324","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":"New outcrops of the Upper Cretaceous \"Boquillas Formation\" in the Franklin Mountains near El Paso, Texas","authors":"S. Lucas, K. Krainer, J. Spielmann, B. Cornet","doi":"10.56577/sm-2012.180","DOIUrl":"https://doi.org/10.56577/sm-2012.180","url":null,"abstract":"","PeriodicalId":240412,"journal":{"name":"Proceedings Volume: \"Evaluating How Continental Sedimentary Basins Fill: Development and Preservation of Sedimentary Successions\", New Mexico Geological Society, 2012 Annual Spring Meeting","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127826872","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":"How Trees Interact With Their Environment: A Stable Isotope Study","authors":"Gierke C. G., B. Newton","doi":"10.56577/sm-2012.220","DOIUrl":"https://doi.org/10.56577/sm-2012.220","url":null,"abstract":"","PeriodicalId":240412,"journal":{"name":"Proceedings Volume: \"Evaluating How Continental Sedimentary Basins Fill: Development and Preservation of Sedimentary Successions\", New Mexico Geological Society, 2012 Annual Spring Meeting","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121288695","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":"Evaluating solute sources in the Upper Gila River, New Mexico","authors":"P. Vakhlanov, L. Crossey, C. Dahm, V. Acuña, A. Ali","doi":"10.56577/sm-2012.184","DOIUrl":"https://doi.org/10.56577/sm-2012.184","url":null,"abstract":"","PeriodicalId":240412,"journal":{"name":"Proceedings Volume: \"Evaluating How Continental Sedimentary Basins Fill: Development and Preservation of Sedimentary Successions\", New Mexico Geological Society, 2012 Annual Spring Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130865630","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":"Identifying the magma source(s) of the Carrizozo lava flow, south-central New Mexico","authors":"E. Gladish, F. Ramos, N. McMillan","doi":"10.56577/sm-2012.167","DOIUrl":"https://doi.org/10.56577/sm-2012.167","url":null,"abstract":"","PeriodicalId":240412,"journal":{"name":"Proceedings Volume: \"Evaluating How Continental Sedimentary Basins Fill: Development and Preservation of Sedimentary Successions\", New Mexico Geological Society, 2012 Annual Spring Meeting","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121413283","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":"Late Cretaceous U-Pb tuff ages from the Laramide Skunk Ranch formation, Little Hatchet Mountains, southwestern New Mexico","authors":"G. Jennings, T. Lawton","doi":"10.56577/sm-2012.165","DOIUrl":"https://doi.org/10.56577/sm-2012.165","url":null,"abstract":"New LA-ICP-MS U-Pb ages on zircon crystals from airfall tuff beds within the Skunk Ranch Formation, a Laramide synorogenic unit exposed in the Little Hatchet Mountains, southwestern New Mexico, indicate a chronostratigraphic age of 71-70 Ma. Ranging from 374 m thick in its southern exposures to 738 m in northern exposures near Playas Peak, the Skunk Ranch Formation is divided into three informal members including a lower conglomerate member, a middle member of lacustrine shale and basaltic-andesite flows, and an upper member of conglomerate and sandstone. Near Playas Peak, the Skunk Ranch Formation overlies a thick section of the Campanian Ringbone Formation, but south of the Mojado thrust fault, the lower member unconformably overlies Albian carbonate strata. The Mojado thrust cuts the lower member and terminates in a fault-tip anticline in the middle member, which thus provides a minimum age on fault movement. Three tuff beds from the middle member were dated and yielded stratigraphically consistent ages. The stratigraphically lowest sample yielded a weighted mean age of 71.4 ± 0.5 Ma (n=81; MSWD=0.89). The middle tuff bed has a weighted age of 70.6 ± 0.7 Ma (n=32; MSWD=0.39). The stratigraphically highest tuff bed yielded a weighted mean age of 70.4 ± 0.5 Ma (n=60; MSWD=1.04). The new ages indicate that the Skunk Ranch is Campanian-Maastrichtian in age, rather than Eocene as previously interpreted on the basis of ostracodes and that it is correlative with the Hidalgo Formation, a thick section of andesitic flows and flow breccias. The Skunk Ranch Formation was formerly interpreted to record the second phase of a two-stage history of Laramide deformation in southwestern New Mexico. In addition to significantly improving stratigraphic correlation of Laramide strata, the new radiometric ages indicate that Laramide deformation in the Little Hatchet Mountains likely was restricted to the latest Cretaceous.","PeriodicalId":240412,"journal":{"name":"Proceedings Volume: \"Evaluating How Continental Sedimentary Basins Fill: Development and Preservation of Sedimentary Successions\", New Mexico Geological Society, 2012 Annual Spring Meeting","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132594866","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":"Nogal Canyon caldera, southern San Mateo Mountains, Socorro County, New Mexico; A progress report","authors":"V. McLemore","doi":"10.56577/sm-2012.166","DOIUrl":"https://doi.org/10.56577/sm-2012.166","url":null,"abstract":"Mateo Mountains has refined history of the caldera. Some of the northern parts of the caldera remain unmapped. Stratigraphic relationships indicate that the eruption of the Vicks Peak Tuff was followed by intrusion of the granite of Kelley Canyon and rhyolite of Alamosa Canyon, within <0.42 Ma (Lynch, 2003) in the western part of the caldera. Geochemical studies confirm they were from the same source. The Springtime Canyon Formation overlies the Vicks Peak Tuff and consists of rhyolite, quartz latite and latite flows and associated tuffs erupted along the eastern boundary, probably during this time period, but dating is required. Rhyolite dikes and small rhyolite domes erupted along the southern and northern boundaries and could be related to the caldera. The northern boundary of the caldera is partially concealed by the formation of the Mt. Withington caldera and eruption of the Vicks Peak Tuff and younger rhyolites. However, San Juan Peak is along the northeastern boundary, where an undated peralkaline rhyolite flow and dikes overlies Vicks Peak Tuff, and probably is one of the last eruptions associate with the caldera. The caldera was offset locally by younger Basin and Range faults (i.e. Rock Springs-Priest, Indian Peaks, Rhyolite, Dark Canyon, Bell Mountain faults). The San Jose mining district (Au, Ag, Cu) lies within the caldera along these Basin and Range faults, and associated hydrothermal alteration has made stratigraphic correlations difficult.","PeriodicalId":240412,"journal":{"name":"Proceedings Volume: \"Evaluating How Continental Sedimentary Basins Fill: Development and Preservation of Sedimentary Successions\", New Mexico Geological Society, 2012 Annual Spring Meeting","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131461049","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 Beartooth-Mojado connection: Using mid-Cretaceous sedimentary rocks to understand the tectonic history of southwest New Mexico","authors":"S. Machin, J. Amato, T. Lawton","doi":"10.56577/sm-2012.187","DOIUrl":"https://doi.org/10.56577/sm-2012.187","url":null,"abstract":"","PeriodicalId":240412,"journal":{"name":"Proceedings Volume: \"Evaluating How Continental Sedimentary Basins Fill: Development and Preservation of Sedimentary Successions\", New Mexico Geological Society, 2012 Annual Spring Meeting","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115606891","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":"Pennyslvanian Sandia Formation in the Sierra Nacimiento, New Mexico: Evidence of tectonism of the Arm Penasco uplift","authors":"K. Krainer, S. Lucas, J. Spielmann, D. Vachard","doi":"10.56577/sm-2012.179","DOIUrl":"https://doi.org/10.56577/sm-2012.179","url":null,"abstract":"The Lower-Middle Pennsylvanian (?late Morrowan- early Atokan) Sandia Fm. in the Sierra Nacimiento, north-central New Mexico, is characterized by distinct lateral changes in thickness and facies as a result of the ancestral Rocky Mountain (ARM) deformation. In the Sierra Nacimiento, the Sandia Fm. is thinner than at the type section in the Sandia Mountains near Albuquerque (124 m). The thickest sections (72 m) are exposed on the eastern side of the Sierra Nacimiento north of Jemez Springs (Soda Dam), where the Sandia Fm. rests on Precambrian gneiss and is composed of shale with intercalated sandstone and fossiliferous limestone containing the fusulinids Millerella, Eostaffella and Fusulinella, indicating an Atokan age. Towards the west and north the Sandia Fm. thins and is entirely siliciclastic, composed of alternating shale, siltstone and sandstone (Mesa Venado, Porter Landing, Rancho de Chaparral). North of Guadalupe Box, the Sandia Fm. overlies the Osha Canyon Fm., is 32 m thick and composed of several fluvial fining-upward cycles and a thin marine horizon at the top. The northernmost outcrops are at Resumidero east of San Pedro Peak where the Sandia Formation is approximately 13 m thick and overlain by Gray Mesa Formation. Locally, near the western and southern margin of the Sierra Nacimiento, the Sandia Formation is absent. At Log Springs near the southern end of the Sierra Nacimiento the Log Springs Fm. is unconformably overlain by thin Osha Canyon Fm. and Gray Mesa Fm., indicating phases of uplift during Late Mississippian and Early Permian time. At Coyote Flat west of Jemez and at Rio de las Vacas the basement is overlain by the Guadalupe Box Fm., an equivalent of the Atrasado Formation (late Desmoinesian-middle Virgilian). In the area of Camp Zia northwest of Cuba, the Precambrian basement is overlain by red beds of the Abo Fm., indicating that the Penasco uplift existed there as a positive high during the entire Pennsylvanian. Thus, thickness and facies changes and the distribution of the Sandia Fm. in the Sierra Nacimiento can be attributed to ARM tectonic movements of the Penasco uplift.","PeriodicalId":240412,"journal":{"name":"Proceedings Volume: \"Evaluating How Continental Sedimentary Basins Fill: Development and Preservation of Sedimentary Successions\", New Mexico Geological Society, 2012 Annual Spring Meeting","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121977154","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}