新墨西哥州中北部中侏罗统Todilto组晚更新世(Rancholabrean)动物诱捕裂缝的构造发育

Q4 Earth and Planetary Sciences

New Mexico Geology Pub Date : 2006-01-01 DOI:10.58799/nmg-v28n3.84

L. Rinehart, S. Lucas, G. Morgan, L. Woodward

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引用次数: 1

摘要

在新墨西哥州桑多瓦尔县圣伊西德罗附近的中侏罗世Todilto组的开放裂缝中，发现了大型晚更新世哺乳动物，它们的关节骨被保存在裂缝填埋物中。这些裂缝可能是Laramide造山运动期间挤压形成闭合共轭裂缝和里约热内卢大裂谷发育的伸展作用的结果。在后期的事件中，共轭剪切被打开，并形成额外的张拉，开放裂缝。

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Tectonic development of late Pleistocene (Rancholabrean) animal-trapping fissures in the Middle Jurassic Todilto Formation, north-central New Mexico

Open fissures in the Middle Jurassic Todilto Formation near San Ysidro, Sandoval County, New Mexico, trapped large late Pleistocene mammals whose articulated bones are preserved in the fissure fill. The fissures probably originated as the result of two tectonic events—compression that led to closed conjugate fractures during the Laramide orogeny followed by extension associated with development of the Rio Grande rift. During the later event the conjugate shears were opened and additional extensional, open fractures were formed.

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来源期刊

New Mexico Geology Earth and Planetary Sciences-Geology

CiteScore

0.60

自引率

0.00%

发文量

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.