Paleoecology of Pennsylvanian phylloid algal buildups in south Guizhou, China
Pennsylvanian phylloid algal reefs are widespread and well exposed in south Guizhou, China. Here we report on reefs ranging from 2 to 8 m thickness and 30-50 m lateral extension. Algae, the main components, display a wide spectrum of growth forms, but are commonly cyathiform (cup-shaped) and leaf-li...
Published in: | Facies |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2007
|
Subjects: | |
Online Access: | https://archive-ouverte.unige.ch/unige:17404 |
id |
ftunivgeneve:oai:unige.ch:aou:unige:17404 |
---|---|
record_format |
openpolar |
spelling |
ftunivgeneve:oai:unige.ch:aou:unige:17404 2023-10-01T03:52:41+02:00 Paleoecology of Pennsylvanian phylloid algal buildups in south Guizhou, China Enpu, Gong Samankassou, Elias Changqing, Guan Yongli, Zhang Baoliang, Sun 2007 https://archive-ouverte.unige.ch/unige:17404 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1007/s10347-007-0122-4 https://archive-ouverte.unige.ch/unige:17404 unige:17404 info:eu-repo/semantics/ ISSN: 1612-4820 Facies, vol. 53, no. 4 (2007) p. 615-623 info:eu-repo/classification/ddc/550 phylloid algae buildups paleoecology guizhou pennsylvanian GREAT-BARRIER-REEF EASTERN JAVA SEA HALIMEDA BIOHERMS NEW-MEXICO EUGONOPHYLLUM MOUNTAINS INDONESIA MEADOWS CEMENTS MOUNDS info:eu-repo/semantics/article Text Article scientifique 2007 ftunivgeneve https://doi.org/10.1007/s10347-007-0122-4 2023-09-07T06:59:55Z Pennsylvanian phylloid algal reefs are widespread and well exposed in south Guizhou, China. Here we report on reefs ranging from 2 to 8 m thickness and 30-50 m lateral extension. Algae, the main components, display a wide spectrum of growth forms, but are commonly cyathiform (cup-shaped) and leaf-like (undulate plates). The algal reef facies is dominated by boundstone. Algal thalli form a dense carpet whose framework pores are filled with marine cement and peloidal micrite. The peloidal matrix is dense, partly laminated or clotted with irregular surfaces and often gravity defying. Algal reefs in Guizhou differ from examples reported to date by the high biodiversity of organisms other than phylloids: e.g., the intergrowth of algae with corals (some of which are twice the size of algal thalli) and numerous large brachiopods. This contrasts to previous views that phylloid algal "meadows" dominated the actual seafloor, excluding other biota. Also, the pervasive marine cements (up to 50%) including botryoidal cement are noteworthy. Algal reefs developed at platform margins, a depositional environment similar to that of modern Halimeda mounds in Java, Australia and off Bahamas, and to that of time-equivalent examples reported from the Canadian Arctic Archipelago. Whereas nutrients appear decisive in the growth of Halimeda reefs, algal reefs reported herein seemingly grew under conditions of low nutrient levels. Overall, algal reefs in Guizhou challenge previous views on growth forms, diversity patterns, and depositional environments and add to the spectrum of these partly puzzling biogenic structures. Article in Journal/Newspaper Arctic Archipelago Arctic Canadian Arctic Archipelago Université de Genève: Archive ouverte UNIGE Arctic Canadian Arctic Archipelago Facies 53 4 615 623 |
institution |
Open Polar |
collection |
Université de Genève: Archive ouverte UNIGE |
op_collection_id |
ftunivgeneve |
language |
English |
topic |
info:eu-repo/classification/ddc/550 phylloid algae buildups paleoecology guizhou pennsylvanian GREAT-BARRIER-REEF EASTERN JAVA SEA HALIMEDA BIOHERMS NEW-MEXICO EUGONOPHYLLUM MOUNTAINS INDONESIA MEADOWS CEMENTS MOUNDS |
spellingShingle |
info:eu-repo/classification/ddc/550 phylloid algae buildups paleoecology guizhou pennsylvanian GREAT-BARRIER-REEF EASTERN JAVA SEA HALIMEDA BIOHERMS NEW-MEXICO EUGONOPHYLLUM MOUNTAINS INDONESIA MEADOWS CEMENTS MOUNDS Enpu, Gong Samankassou, Elias Changqing, Guan Yongli, Zhang Baoliang, Sun Paleoecology of Pennsylvanian phylloid algal buildups in south Guizhou, China |
topic_facet |
info:eu-repo/classification/ddc/550 phylloid algae buildups paleoecology guizhou pennsylvanian GREAT-BARRIER-REEF EASTERN JAVA SEA HALIMEDA BIOHERMS NEW-MEXICO EUGONOPHYLLUM MOUNTAINS INDONESIA MEADOWS CEMENTS MOUNDS |
description |
Pennsylvanian phylloid algal reefs are widespread and well exposed in south Guizhou, China. Here we report on reefs ranging from 2 to 8 m thickness and 30-50 m lateral extension. Algae, the main components, display a wide spectrum of growth forms, but are commonly cyathiform (cup-shaped) and leaf-like (undulate plates). The algal reef facies is dominated by boundstone. Algal thalli form a dense carpet whose framework pores are filled with marine cement and peloidal micrite. The peloidal matrix is dense, partly laminated or clotted with irregular surfaces and often gravity defying. Algal reefs in Guizhou differ from examples reported to date by the high biodiversity of organisms other than phylloids: e.g., the intergrowth of algae with corals (some of which are twice the size of algal thalli) and numerous large brachiopods. This contrasts to previous views that phylloid algal "meadows" dominated the actual seafloor, excluding other biota. Also, the pervasive marine cements (up to 50%) including botryoidal cement are noteworthy. Algal reefs developed at platform margins, a depositional environment similar to that of modern Halimeda mounds in Java, Australia and off Bahamas, and to that of time-equivalent examples reported from the Canadian Arctic Archipelago. Whereas nutrients appear decisive in the growth of Halimeda reefs, algal reefs reported herein seemingly grew under conditions of low nutrient levels. Overall, algal reefs in Guizhou challenge previous views on growth forms, diversity patterns, and depositional environments and add to the spectrum of these partly puzzling biogenic structures. |
format |
Article in Journal/Newspaper |
author |
Enpu, Gong Samankassou, Elias Changqing, Guan Yongli, Zhang Baoliang, Sun |
author_facet |
Enpu, Gong Samankassou, Elias Changqing, Guan Yongli, Zhang Baoliang, Sun |
author_sort |
Enpu, Gong |
title |
Paleoecology of Pennsylvanian phylloid algal buildups in south Guizhou, China |
title_short |
Paleoecology of Pennsylvanian phylloid algal buildups in south Guizhou, China |
title_full |
Paleoecology of Pennsylvanian phylloid algal buildups in south Guizhou, China |
title_fullStr |
Paleoecology of Pennsylvanian phylloid algal buildups in south Guizhou, China |
title_full_unstemmed |
Paleoecology of Pennsylvanian phylloid algal buildups in south Guizhou, China |
title_sort |
paleoecology of pennsylvanian phylloid algal buildups in south guizhou, china |
publishDate |
2007 |
url |
https://archive-ouverte.unige.ch/unige:17404 |
geographic |
Arctic Canadian Arctic Archipelago |
geographic_facet |
Arctic Canadian Arctic Archipelago |
genre |
Arctic Archipelago Arctic Canadian Arctic Archipelago |
genre_facet |
Arctic Archipelago Arctic Canadian Arctic Archipelago |
op_source |
ISSN: 1612-4820 Facies, vol. 53, no. 4 (2007) p. 615-623 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s10347-007-0122-4 https://archive-ouverte.unige.ch/unige:17404 unige:17404 |
op_rights |
info:eu-repo/semantics/ |
op_doi |
https://doi.org/10.1007/s10347-007-0122-4 |
container_title |
Facies |
container_volume |
53 |
container_issue |
4 |
container_start_page |
615 |
op_container_end_page |
623 |
_version_ |
1778518826790420480 |