应用砂岩模态组成和ImageJ分析约束新墨西哥州早二叠世(沃尔夫campian)非海相地层长石蚀变

IF 0.5 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Journal of Cave and Karst Studies Pub Date : 2022-04-07 DOI:10.56577/sm-2022.2824

Justin Matthew Friend, B. Hampton, A. Bonar

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引用次数: 0

摘要

对早二叠世、Abo组非海相地层(及等效地层)的岩石学分析表明，新墨西哥州北部、中部和南部的斜长石和钾长石百分比变化很大，长石蚀变趋势变化很大。砂岩模态组成趋势表明，与北部相比，碎屑钾长石显著减少，斜长石显著增加(P=53%;K=47%)，中部(P=85%;K=15%)，新墨西哥州南部(P=97%;K = 3%)。此外，与新墨西哥北部相比，新墨西哥中部和南部这些地层中成岩钠长石的丰度更高。

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Applying sandstone modal composition and ImageJ analysis to constrain feldspar alteration in Early Permian (Wolfcampian) nonmarine strata in New Mexico

Petrographic analysis of Early Permian, nonmarine strata of the Abo Formation (and equivalent strata) reveal a wide range in plagioclase and K-feldspar percentages and highly variable feldspar alteration trends throughout northern, central, and southern New Mexico. Sandstone modal composition trends show a significant decrease in detrital K-feldspar and increase in plagioclase as you compare percentages from northern (P=53%; K=47%), central (P=85%; K=15%), and southern New Mexico (P=97%; K=3%). In addition, elevated occurrences of diagenetic albite are in higher abundance in these strata in central and southern New Mexico compared to northern New Mexico.

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来源期刊

Journal of Cave and Karst Studies 地学-地球科学综合

CiteScore

1.90

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Cave and Karst Studies is a multidisciplinary journal devoted to cave and karst research. The Journal is seeking original, unpublished manuscripts concerning the scientific study of caves or other karst features. Authors do not need to be members of the National Speleological Society, but preference is given to manuscripts of importance to North American speleology.