Matches in SemOpenAlex for { <https://semopenalex.org/work/W3123327815> ?p ?o ?g. }
- W3123327815 endingPage "1184" @default.
- W3123327815 startingPage "1165" @default.
- W3123327815 abstract "Abstract. A nonconformity refers to a hiatal surface located between metamorphic or igneous rocks and overlying sedimentary or volcanic rocks. These surfaces are key features with respect to understanding the relations among climate, lithosphere and tectonic movements during ancient times. In this study, the petrological, mineralogical and geochemical characteristics of Variscan basement rock as well as its overlying Permian volcano-sedimentary succession from a drill core in the Sprendlinger Horst, Germany, are analyzed by means of polarization microscopy, and environmental scanning electron microscope, X-Ray diffraction, X-ray fluorescence and inductively coupled plasma mass spectrometry analyses. In the gabbroic diorite of the basement, the intensity of micro- and macro-fractures increases towards the top, indicating an intense physical weathering. The overlying Permian volcanic rock is a basaltic andesite that shows less intense physical weathering compared with the gabbroic diorite. In both segments, secondary minerals are dominated by illite and a mixed-layer phase of illite and smectite (I–S). The corrected chemical index of alteration (CIA) and the plagioclase index of alteration (PIA) indicate an intermediate to unweathered degree in the gabbroic diorite and an extreme to unweathered degree in the basaltic andesite. The τ values for both basaltic andesite and gabbroic diorite indicate an abnormal enrichment of K, Rb and Cs that cannot be observed in the overlying Permian sedimentary rocks. Accompanying minerals such as adularia suggest subsequent overprint by (K-rich) fluids during burial diagenesis which promoted the conversion from smectite to illite. The overall order of element depletion in both basaltic andesite and gabbroic diorite during the weathering process is as follows: large-ion lithophile elements (LILEs) > rare earth elements (REEs) > high-field-strength elements (HFSEs). Concerning the REEs, heavy rare earth elements (HREEs) are less depleted than light rare earth elements (LREEs). Our study shows that features of supergene physical and chemical paleo-weathering are well conserved at the post-Variscan nonconformity despite hypogene alteration. Both can be distinguished by characteristic minerals and geochemical indices. Based on these results, a new workflow to eliminate distractions for paleoclimate evaluation and evolution is developed." @default.
- W3123327815 created "2021-02-01" @default.
- W3123327815 creator A5009349627 @default.
- W3123327815 creator A5014811890 @default.
- W3123327815 creator A5043962925 @default.
- W3123327815 creator A5044995972 @default.
- W3123327815 creator A5059090523 @default.
- W3123327815 creator A5074383190 @default.
- W3123327815 date "2021-05-25" @default.
- W3123327815 modified "2023-10-06" @default.
- W3123327815 title "Rock alteration at the post-Variscan nonconformity: implications for Carboniferous–Permian surface weathering versus burial diagenesis and paleoclimate evaluation" @default.
- W3123327815 cites W1488678453 @default.
- W3123327815 cites W1664355803 @default.
- W3123327815 cites W1858659914 @default.
- W3123327815 cites W1964641312 @default.
- W3123327815 cites W1965701586 @default.
- W3123327815 cites W1969859799 @default.
- W3123327815 cites W1972432003 @default.
- W3123327815 cites W1974070434 @default.
- W3123327815 cites W1980600502 @default.
- W3123327815 cites W1981792740 @default.
- W3123327815 cites W1982487268 @default.
- W3123327815 cites W1986714044 @default.
- W3123327815 cites W1990614253 @default.
- W3123327815 cites W1997446265 @default.
- W3123327815 cites W2000509135 @default.
- W3123327815 cites W2008404909 @default.
- W3123327815 cites W2009123317 @default.
- W3123327815 cites W2009196956 @default.
- W3123327815 cites W2011721971 @default.
- W3123327815 cites W2012316671 @default.
- W3123327815 cites W2012999674 @default.
- W3123327815 cites W2016223358 @default.
- W3123327815 cites W2016684199 @default.
- W3123327815 cites W2019034794 @default.
- W3123327815 cites W2019758284 @default.
- W3123327815 cites W2023700255 @default.
- W3123327815 cites W2026301874 @default.
- W3123327815 cites W2028364227 @default.
- W3123327815 cites W2028825990 @default.
- W3123327815 cites W2029401070 @default.
- W3123327815 cites W2038631041 @default.
- W3123327815 cites W2043165162 @default.
- W3123327815 cites W2048406756 @default.
- W3123327815 cites W2054962384 @default.
- W3123327815 cites W2058462573 @default.
- W3123327815 cites W2064191205 @default.
- W3123327815 cites W2076617011 @default.
- W3123327815 cites W2077711540 @default.
- W3123327815 cites W2081348939 @default.
- W3123327815 cites W2083832688 @default.
- W3123327815 cites W2086305547 @default.
- W3123327815 cites W2087447624 @default.
- W3123327815 cites W2087937118 @default.
- W3123327815 cites W2092144691 @default.
- W3123327815 cites W2093304541 @default.
- W3123327815 cites W2095734921 @default.
- W3123327815 cites W2097039519 @default.
- W3123327815 cites W2100102468 @default.
- W3123327815 cites W2109198503 @default.
- W3123327815 cites W2123758858 @default.
- W3123327815 cites W2154465659 @default.
- W3123327815 cites W2182923733 @default.
- W3123327815 cites W2320883036 @default.
- W3123327815 cites W2322450203 @default.
- W3123327815 cites W2326792201 @default.
- W3123327815 cites W2329972915 @default.
- W3123327815 cites W2509481245 @default.
- W3123327815 cites W2526433560 @default.
- W3123327815 cites W2544370489 @default.
- W3123327815 cites W2605928853 @default.
- W3123327815 cites W2726587287 @default.
- W3123327815 cites W278089513 @default.
- W3123327815 cites W2886068257 @default.
- W3123327815 cites W2894544074 @default.
- W3123327815 cites W2953943958 @default.
- W3123327815 cites W2986413343 @default.
- W3123327815 cites W3047818933 @default.
- W3123327815 cites W3083068139 @default.
- W3123327815 cites W4237643639 @default.
- W3123327815 cites W2012995020 @default.
- W3123327815 doi "https://doi.org/10.5194/se-12-1165-2021" @default.
- W3123327815 hasPublicationYear "2021" @default.
- W3123327815 type Work @default.
- W3123327815 sameAs 3123327815 @default.
- W3123327815 citedByCount "6" @default.
- W3123327815 countsByYear W31233278152021 @default.
- W3123327815 countsByYear W31233278152022 @default.
- W3123327815 countsByYear W31233278152023 @default.
- W3123327815 crossrefType "journal-article" @default.
- W3123327815 hasAuthorship W3123327815A5009349627 @default.
- W3123327815 hasAuthorship W3123327815A5014811890 @default.
- W3123327815 hasAuthorship W3123327815A5043962925 @default.
- W3123327815 hasAuthorship W3123327815A5044995972 @default.
- W3123327815 hasAuthorship W3123327815A5059090523 @default.
- W3123327815 hasAuthorship W3123327815A5074383190 @default.
- W3123327815 hasBestOaLocation W31233278151 @default.
- W3123327815 hasConcept C120806208 @default.