The occurrence and genesis of clay minerals associated with quaternary caliches in the Mersin area, southern Turkey
Caliche in various forms, namely powdery, nodule, tube, fracture-infill, laminar crust, hard laminated crust (hardpan), and pisolitic crust, is widespread in the Mersin area in southern Turkey. It generally occurs within and/or over the reddish-brown mudstone of the Kuzgun Formation (Tortonian, Mioc...
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ftuabarcelonapb:oai:ddd.uab.cat:224659 2023-06-18T03:40:10+02:00 The occurrence and genesis of clay minerals associated with quaternary caliches in the Mersin area, southern Turkey Kadir, Selahattín Eren, Muhsin 2008 application/pdf https://ddd.uab.cat/record/224659 eng eng Clays and Clay Minerals Vol. 56, Núm. 2 (2008), p. 244-258 https://ddd.uab.cat/record/224659 urn:10.1346/CCMN.2008.0560208 urn:oai:ddd.uab.cat:224659 urn:scopus_id:48249094622 urn:articleid:15528367v56n2p244 urn:wos_id:000257103800008 restricted access Tots els drets reservats. https://rightsstatements.org/vocab/InC/1.0/ Caliche Geochemistry Mineralogy Palygorskite Quaternary Smectite Turkey Article 2008 ftuabarcelonapb 2023-06-06T23:59:52Z Caliche in various forms, namely powdery, nodule, tube, fracture-infill, laminar crust, hard laminated crust (hardpan), and pisolitic crust, is widespread in the Mersin area in southern Turkey. It generally occurs within and/or over the reddish-brown mudstone of the Kuzgun Formation (Tortonian, Miocene) and alluvial red soils of the Quaternary. The mineralogical distribution along representative caliche profiles was examined by X-ray diffraction, scanning electron microscopy, differential thermal analysis-thermal gravimetry, and chemical techniques. Calcite is the most abundant mineral associated with minor amounts of palygorskite in caliche samples, whereas smectite is prevalent mainly in the reddish-brown mudstone and alluvial red soils of the caliche parent materials and is associated with appreciable amounts of palygorskite. These minerals are also accompanied by trace amount of illite, quartz, feldspar, and a poorly crystalline phase. Palygorskite fibers and fiber bundles were developed authigenically on euhedral or subhedral calcite crystals of the caliche units and at the edges of smectite flakes in the caliche host-rocks or sediments. Intense, continuous evaporation of subsurface soil-water resulted in an increase in pH and the dissolution of detrital smectite within the red mudstones and alluvial red soils that enclose the isolated caliche forms, and caused an increase in the Al+Fe and Mg/Ca ratio, favoring the formation of palygorskite under alkaline conditions. The calcium required for caliche formation may have originated from eolian dust, detrital carbonate minerals, and/or other caliche materials, which are dissolved by carbonic acid. Article in Journal/Newspaper Carbonic acid Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB Clays and Clay Minerals 56 2 244 258 |
institution |
Open Polar |
collection |
Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB |
op_collection_id |
ftuabarcelonapb |
language |
English |
topic |
Caliche Geochemistry Mineralogy Palygorskite Quaternary Smectite Turkey |
spellingShingle |
Caliche Geochemistry Mineralogy Palygorskite Quaternary Smectite Turkey Kadir, Selahattín Eren, Muhsin The occurrence and genesis of clay minerals associated with quaternary caliches in the Mersin area, southern Turkey |
topic_facet |
Caliche Geochemistry Mineralogy Palygorskite Quaternary Smectite Turkey |
description |
Caliche in various forms, namely powdery, nodule, tube, fracture-infill, laminar crust, hard laminated crust (hardpan), and pisolitic crust, is widespread in the Mersin area in southern Turkey. It generally occurs within and/or over the reddish-brown mudstone of the Kuzgun Formation (Tortonian, Miocene) and alluvial red soils of the Quaternary. The mineralogical distribution along representative caliche profiles was examined by X-ray diffraction, scanning electron microscopy, differential thermal analysis-thermal gravimetry, and chemical techniques. Calcite is the most abundant mineral associated with minor amounts of palygorskite in caliche samples, whereas smectite is prevalent mainly in the reddish-brown mudstone and alluvial red soils of the caliche parent materials and is associated with appreciable amounts of palygorskite. These minerals are also accompanied by trace amount of illite, quartz, feldspar, and a poorly crystalline phase. Palygorskite fibers and fiber bundles were developed authigenically on euhedral or subhedral calcite crystals of the caliche units and at the edges of smectite flakes in the caliche host-rocks or sediments. Intense, continuous evaporation of subsurface soil-water resulted in an increase in pH and the dissolution of detrital smectite within the red mudstones and alluvial red soils that enclose the isolated caliche forms, and caused an increase in the Al+Fe and Mg/Ca ratio, favoring the formation of palygorskite under alkaline conditions. The calcium required for caliche formation may have originated from eolian dust, detrital carbonate minerals, and/or other caliche materials, which are dissolved by carbonic acid. |
format |
Article in Journal/Newspaper |
author |
Kadir, Selahattín Eren, Muhsin |
author_facet |
Kadir, Selahattín Eren, Muhsin |
author_sort |
Kadir, Selahattín |
title |
The occurrence and genesis of clay minerals associated with quaternary caliches in the Mersin area, southern Turkey |
title_short |
The occurrence and genesis of clay minerals associated with quaternary caliches in the Mersin area, southern Turkey |
title_full |
The occurrence and genesis of clay minerals associated with quaternary caliches in the Mersin area, southern Turkey |
title_fullStr |
The occurrence and genesis of clay minerals associated with quaternary caliches in the Mersin area, southern Turkey |
title_full_unstemmed |
The occurrence and genesis of clay minerals associated with quaternary caliches in the Mersin area, southern Turkey |
title_sort |
occurrence and genesis of clay minerals associated with quaternary caliches in the mersin area, southern turkey |
publishDate |
2008 |
url |
https://ddd.uab.cat/record/224659 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_relation |
Clays and Clay Minerals Vol. 56, Núm. 2 (2008), p. 244-258 https://ddd.uab.cat/record/224659 urn:10.1346/CCMN.2008.0560208 urn:oai:ddd.uab.cat:224659 urn:scopus_id:48249094622 urn:articleid:15528367v56n2p244 urn:wos_id:000257103800008 |
op_rights |
restricted access Tots els drets reservats. https://rightsstatements.org/vocab/InC/1.0/ |
container_title |
Clays and Clay Minerals |
container_volume |
56 |
container_issue |
2 |
container_start_page |
244 |
op_container_end_page |
258 |
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1769004990979899392 |