Ichnology of the Lower Cretaceous (Albian) Mesilla Valley Formation, Cerro de Cristo Rey, southeastern New Mexico, USA

Q4 Earth and Planetary Sciences
Eric J. Kappus, S. Lucas
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引用次数: 1

Abstract

Invertebrate trace fossils from the Albian Mesilla Valley Formation (Washita Group) at Cerro de Cristo Rey, Sunland Park, NM represent the following ichnotaxa: Ancorichnus isp., Arenicolites isp., Bergueria isp., Bichordites sp., Cardioichnus foradadensis, C. biloba, Chondrites intricatus, Cochlichnus anguineus, Coprulus oblongus, Gordia marina, Helicodromites isp., Lockeia isp., Ophiomorpha nodosa, Palaeophycus tubularis, P. striatus, P. heberti, Planolites isp., Protovirgularia dichotoma, Rhizocorallium commune var. irregulare (with Coprulus oblongus), Skolithos isp., Spongeliomorpha isp., S. sublumbricoides, S. oraviense, Taenidium isp., Thalassinoides isp., T. paradoxicus, Treptichnus isp., a chimney structure (Chomatichnus?), and the biofilm Rugalichnus (“Kinneyia”). This is the first study of the invertebrate ichnology of any of the shallow marine units at Cerro de Cristo Rey. The Mesilla Valley Formation contains a medium/high diversity ichnoassemblage, including fugichnia (i.e., Skolithos), fodichnia (i.e., Chondrites), domichnia (i.e., Ophiomorpha, Thalassinoides), repichnia (Protovirgularia), paschichnia (i.e., Palaeophycus), and cubichnia (i.e., Bergaueria, Cardioichnus, Lockeia), as well as compound traces and composite traces. This ichnoassemblage was preserved in tempestites (storm deposits) from below wave base on the upper/middle continental shelf during Oceanic Anoxic Event 1d and contains ichnotaxa representative of the proximal Cruziana ichnofacies (with Skolithos influence).
美国新墨西哥州东南部Cerro de Cristo Rey下白垩纪(Albian) Mesilla Valley组技术
新墨西哥州桑兰公园Cerro de Cristo Rey的Albian Mesilla Valley Formation (Washita Group)的无脊椎动物化石代表了以下ichno类群:Ancorichnus isp;砂粒石;, bergeria isp。二叶球粒陨石、弓形锥虫、长尾锥虫、长尾锥虫、长尾锥虫、长尾锥虫、长尾锥虫。, Lockeia isp。叶面蛇苔、管状古蛇苔、纹状蛇苔、叶面蛇苔、扁豆蛇苔。,双歧原菌属,不规则根腐菌属(与长尾菌属),长尾菌属。海绵状植物。,半伞状伞,鸟状伞,带状伞。Thalassinoides的翻译结果:, T. paradoxicus, treptichus。,烟囱结构(Chomatichnus?)和生物膜Rugalichnus (Kinneyia)。这是第一次对基督山浅海单位的无脊椎动物技术进行研究。Mesilla Valley组包含了中/高多样性的昆虫组合,包括fugichnia(即Skolithos)、fodichnia(即Chondrites)、domichnia(即Ophiomorpha、Thalassinoides)、repichnia(即Protovirgularia)、paschichnia(即Palaeophycus)和cubichnia(即Bergaueria、Cardioichnus、Lockeia),以及复合痕迹和复合痕迹。该鱼类组合在海洋缺氧事件1d期间保存在上/中大陆架波底下的风暴沉积中,包含具有代表性的近Cruziana鱼相(受Skolithos影响)的鱼类分类群。
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来源期刊
New Mexico Geology
New Mexico Geology Earth and Planetary Sciences-Geology
CiteScore
0.60
自引率
0.00%
发文量
0
期刊介绍: New Mexico Geology is a quarterly, peer-reviewed journal available by subscription. Articles of original research are generally less than 10,000 words in length and pertain to the geology of New Mexico and neighboring states, primarily for an audience of professional geologists or those with an interest in the geologic story behind the landscape. The journal also publishes abstracts from regional meetings, theses, and dissertations (NM schools), descriptions of new publications, book reviews, and upcoming meetings. Research papers, short articles, and abstracts from selected back issues of New Mexico Geology are now available as free downloads in PDF format. Back issues are also available in hard copy for a nominal fee.
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