Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1111/1755-6724.14512 |
| Development of Sulfuric Acid Speleogenetic Deposits within Cavernous Middle Eocene Beds: Inference on Hydrocarbon Gas Seepages, Giza Pyramids Plateau, Egypt | |
| Badawy, Hanan S. | |
| 通讯作者 | Badawy, HS (corresponding author), Beni Suef Univ, Dept Geol, Fac Sci, Bani Suwayf, Egypt. |
| 来源期刊 | ACTA GEOLOGICA SINICA-ENGLISH EDITION
 |
| ISSN | 1000-9515 |
| EISSN | 1755-6724 |
| 出版年 | 2021 |
| 卷号 | 95期号:3页码:946-961 |
| 英文摘要 | Development of sulfuric acid speleogenetic mineral deposits within cavernous middle Eocene beds of the Pyramids plateau is linked to hydrocarbon gas seepages. The work carried out field observations, binocular, polarizing, scanning and transmitted electron microscopy investigation, X-ray diffraction and X-ray fluorescence analyses. The morphological and petrographic features and chemical composition of the studied mineral deposits reveal a hypogene sulfuric acid speleogenesis. A model comprised of the following stages can be used to explain the presence of these features. (1) Ascent of hydrogen sulfide (H2S) gas associated with hydrocarbon seepages from the Cretaceous reservoirs under reducing conditions followed by oxidation to sulfuric acid (H2SO4), (2) descent of carbonic acid (H2CO3)-rich solution generated from surface sources, (3) reaction of H2SO4 and H2CO3 with the calcareous and argillaceous host rocks, (4) formation of H2SO4 speleogenetic by-products represented by natroalunite, aluminium-phosphate-sulfate, hydrated halloysite and Fe/Mn oxides within the replacive gypsum, and (5) subsequent stresses due to the formation of nearby stratiform cavities gave rise to the development of fractures/veinlets filled with displacive fibrous satinspar gypsum. The study sets the paleokarst features of the Giza Pyramids plateau within a hypogene sulfuric acid karst system developed by the action of groundwater containing H2S, H2SO4 and H2CO3. |
| 英文关键词 | karstification natroalunite aluminium-phosphate-sulfate hydrated halloysite enterolithic growth satinspar gypsum |
| 类型 | Article |
| 语种 | 英语 |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000667267600018 |
| WOS关键词 | PHOSPHATE-SULFATE MINERALS ; NORTH-WESTERN DESERT ; CARLSBAD-CAVERN ; SOURCE ROCKS ; NEW-MEXICO ; ALUNITE ; ORIGIN ; GEOCHEMISTRY ; CRANDALLITE ; AREA |
| WOS类目 | Geosciences, Multidisciplinary |
| WOS研究方向 | Geology |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/349261 |
| 作者单位 | [Badawy, Hanan S.] Beni Suef Univ, Dept Geol, Fac Sci, Bani Suwayf, Egypt |
| 推荐引用方式 GB/T 7714 | Badawy, Hanan S.. Development of Sulfuric Acid Speleogenetic Deposits within Cavernous Middle Eocene Beds: Inference on Hydrocarbon Gas Seepages, Giza Pyramids Plateau, Egypt[J],2021,95(3):946-961. |
| APA | Badawy, Hanan S..(2021).Development of Sulfuric Acid Speleogenetic Deposits within Cavernous Middle Eocene Beds: Inference on Hydrocarbon Gas Seepages, Giza Pyramids Plateau, Egypt.ACTA GEOLOGICA SINICA-ENGLISH EDITION,95(3),946-961. |
| MLA | Badawy, Hanan S.."Development of Sulfuric Acid Speleogenetic Deposits within Cavernous Middle Eocene Beds: Inference on Hydrocarbon Gas Seepages, Giza Pyramids Plateau, Egypt".ACTA GEOLOGICA SINICA-ENGLISH EDITION 95.3(2021):946-961. |
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