Fluvial origin of the valley system in northern Victoria Land (Antarctica) from quantitative geomorphic analysis
A network of sinuous valleys with typical dendritic pattern characterizes northern Victoria Land (NVL) in Antarctica. Subparallel to parallel and angular to rectangular patterns are also present. Quantitative geomorphic analysis of the valley network has been carried out utilizing GIS spatial analys...
Published in: | Geological Society of America Bulletin |
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ASSOC ENGINEERING GEOLOGISTS GEOLOGICAL SOCIETY AMER
2005
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Online Access: | http://hdl.handle.net/11573/237004 https://doi.org/10.1130/b25529.1 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000226346000014&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://www.scopus.com/inward/record.url?eid=2-s2.0-13344286289&partnerID=65&md5=912fcc39e874696930deba2136e7b649 |
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ftunivromairis:oai:iris.uniroma1.it:11573/237004 2024-04-21T07:50:47+00:00 Fluvial origin of the valley system in northern Victoria Land (Antarctica) from quantitative geomorphic analysis Carlo Baroni Valerio Noti Giovanni Righini Maria Cristina Salvatore CICCACCI, Sirio Carlo, Baroni Valerio, Noti Ciccacci, Sirio Giovanni, Righini Maria Cristina, Salvatore 2005 STAMPA http://hdl.handle.net/11573/237004 https://doi.org/10.1130/b25529.1 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000226346000014&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://www.scopus.com/inward/record.url?eid=2-s2.0-13344286289&partnerID=65&md5=912fcc39e874696930deba2136e7b649 eng eng ASSOC ENGINEERING GEOLOGISTS GEOLOGICAL SOCIETY AMER info:eu-repo/semantics/altIdentifier/wos/WOS:000226346000014 volume:117 issue:1-2 firstpage:212 lastpage:228 numberofpages:17 journal:GEOLOGICAL SOCIETY OF AMERICA BULLETIN http://hdl.handle.net/11573/237004 doi:10.1130/b25529.1 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-13344286289 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000226346000014&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://www.scopus.com/inward/record.url?eid=2-s2.0-13344286289&partnerID=65&md5=912fcc39e874696930deba2136e7b649 cenozoic east antarctica landscape evolution quantitative analysi transantarctic mountains info:eu-repo/semantics/article 2005 ftunivromairis https://doi.org/10.1130/b25529.1 2024-03-28T02:14:10Z A network of sinuous valleys with typical dendritic pattern characterizes northern Victoria Land (NVL) in Antarctica. Subparallel to parallel and angular to rectangular patterns are also present. Quantitative geomorphic analysis of the valley network has been carried out utilizing GIS spatial analysis. While drainage densities and drainage frequencies show low values, segments of the NVL valley network are substantially well organized, as indicated by bifurcation ratio (R.) and direct bifurcation ratio (R-bd) parameters. All basins faithfully adhere to Horton's laws of drainage network composition. Quantitative geomorphic analysis suggests that the valley system can be ascribed to fluvial origin and that consequently, a morphoclimatic system completely different from that of present day must have driven its carving. The resulting data provide indications about the origin of the valley network and this invaluable information can be used for the reconstruction of earlier phases of glacial history and climatic and tectonic evolution of this significant Antarctic region. Fluvial erosion enhanced the denudation of the Trans-antarctic Mountains from at least 55 Ma to at least the Eocene-Oligocene boundary (ca 34 Ma). Fluvial basins adapted to the tectonic structure, following the main regional fault systems. A well-developed alpine topography postdates the fluvial morphology. Temperate glaciers were responsible for denudation until the Late Miocene. Parasitic glaciers presently mantle the previously sculpted topography. Present-day glacial erosion is negligible and denudation has been exceedingly slow since 7.5 Ma. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Victoria Land Sapienza Università di Roma: CINECA IRIS Geological Society of America Bulletin 117 1 212 |
institution |
Open Polar |
collection |
Sapienza Università di Roma: CINECA IRIS |
op_collection_id |
ftunivromairis |
language |
English |
topic |
cenozoic east antarctica landscape evolution quantitative analysi transantarctic mountains |
spellingShingle |
cenozoic east antarctica landscape evolution quantitative analysi transantarctic mountains Carlo Baroni Valerio Noti Giovanni Righini Maria Cristina Salvatore CICCACCI, Sirio Fluvial origin of the valley system in northern Victoria Land (Antarctica) from quantitative geomorphic analysis |
topic_facet |
cenozoic east antarctica landscape evolution quantitative analysi transantarctic mountains |
description |
A network of sinuous valleys with typical dendritic pattern characterizes northern Victoria Land (NVL) in Antarctica. Subparallel to parallel and angular to rectangular patterns are also present. Quantitative geomorphic analysis of the valley network has been carried out utilizing GIS spatial analysis. While drainage densities and drainage frequencies show low values, segments of the NVL valley network are substantially well organized, as indicated by bifurcation ratio (R.) and direct bifurcation ratio (R-bd) parameters. All basins faithfully adhere to Horton's laws of drainage network composition. Quantitative geomorphic analysis suggests that the valley system can be ascribed to fluvial origin and that consequently, a morphoclimatic system completely different from that of present day must have driven its carving. The resulting data provide indications about the origin of the valley network and this invaluable information can be used for the reconstruction of earlier phases of glacial history and climatic and tectonic evolution of this significant Antarctic region. Fluvial erosion enhanced the denudation of the Trans-antarctic Mountains from at least 55 Ma to at least the Eocene-Oligocene boundary (ca 34 Ma). Fluvial basins adapted to the tectonic structure, following the main regional fault systems. A well-developed alpine topography postdates the fluvial morphology. Temperate glaciers were responsible for denudation until the Late Miocene. Parasitic glaciers presently mantle the previously sculpted topography. Present-day glacial erosion is negligible and denudation has been exceedingly slow since 7.5 Ma. |
author2 |
Carlo, Baroni Valerio, Noti Ciccacci, Sirio Giovanni, Righini Maria Cristina, Salvatore |
format |
Article in Journal/Newspaper |
author |
Carlo Baroni Valerio Noti Giovanni Righini Maria Cristina Salvatore CICCACCI, Sirio |
author_facet |
Carlo Baroni Valerio Noti Giovanni Righini Maria Cristina Salvatore CICCACCI, Sirio |
author_sort |
Carlo Baroni |
title |
Fluvial origin of the valley system in northern Victoria Land (Antarctica) from quantitative geomorphic analysis |
title_short |
Fluvial origin of the valley system in northern Victoria Land (Antarctica) from quantitative geomorphic analysis |
title_full |
Fluvial origin of the valley system in northern Victoria Land (Antarctica) from quantitative geomorphic analysis |
title_fullStr |
Fluvial origin of the valley system in northern Victoria Land (Antarctica) from quantitative geomorphic analysis |
title_full_unstemmed |
Fluvial origin of the valley system in northern Victoria Land (Antarctica) from quantitative geomorphic analysis |
title_sort |
fluvial origin of the valley system in northern victoria land (antarctica) from quantitative geomorphic analysis |
publisher |
ASSOC ENGINEERING GEOLOGISTS GEOLOGICAL SOCIETY AMER |
publishDate |
2005 |
url |
http://hdl.handle.net/11573/237004 https://doi.org/10.1130/b25529.1 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000226346000014&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://www.scopus.com/inward/record.url?eid=2-s2.0-13344286289&partnerID=65&md5=912fcc39e874696930deba2136e7b649 |
genre |
Antarc* Antarctic Antarctica East Antarctica Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000226346000014 volume:117 issue:1-2 firstpage:212 lastpage:228 numberofpages:17 journal:GEOLOGICAL SOCIETY OF AMERICA BULLETIN http://hdl.handle.net/11573/237004 doi:10.1130/b25529.1 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-13344286289 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000226346000014&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=0c7ff228ccbaaa74236f48834a34396a http://www.scopus.com/inward/record.url?eid=2-s2.0-13344286289&partnerID=65&md5=912fcc39e874696930deba2136e7b649 |
op_doi |
https://doi.org/10.1130/b25529.1 |
container_title |
Geological Society of America Bulletin |
container_volume |
117 |
container_issue |
1 |
container_start_page |
212 |
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1796934378167730176 |