Carbonate intercalations in a terrigenous foredeep: Late Miocene examples from the Simbruini Mts. and the Salto Valley (Central Apennines -Italy)
Resedimented calcarenites and hybrid arenites are commonly found interbedded with various Upper Miocene terrigenous units (hemipelagic marls, "brecce della Renga fm.", and siliciclastic turbidites) across the Simbruini Mts. and neighbouring areas of Central Apennines. Their distribution pr...
Published in: | Italian Journal of Geosciences |
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SOC GEOLOGICA ITALIANA
2014
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Online Access: | http://hdl.handle.net/11573/524172 https://doi.org/10.3301/ijg.2013.13 |
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ftunivromairis:oai:iris.uniroma1.it:11573/524172 2024-02-04T10:04:02+01:00 Carbonate intercalations in a terrigenous foredeep: Late Miocene examples from the Simbruini Mts. and the Salto Valley (Central Apennines -Italy) FABBI, SIMONE GALLUZZO, FABRIZIO SANTANTONIO, Massimo Rita Maria Pichezzi Fabbi, Simone Galluzzo, Fabrizio Rita Maria, Pichezzi Santantonio, Massimo 2014 STAMPA http://hdl.handle.net/11573/524172 https://doi.org/10.3301/ijg.2013.13 eng eng SOC GEOLOGICA ITALIANA info:eu-repo/semantics/altIdentifier/wos/WOS:000332132100007 volume:133 issue:1 firstpage:85 lastpage:100 numberofpages:16 journal:ITALIAN JOURNAL OF GEOSCIENCES http://hdl.handle.net/11573/524172 doi:10.3301/ijg.2013.13 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84894494910 carbonate factory hybrid arenite upper miocene foredeep central apennine carbonate turbidites info:eu-repo/semantics/article 2014 ftunivromairis https://doi.org/10.3301/ijg.2013.13 2024-01-10T17:54:17Z Resedimented calcarenites and hybrid arenites are commonly found interbedded with various Upper Miocene terrigenous units (hemipelagic marls, "brecce della Renga fm.", and siliciclastic turbidites) across the Simbruini Mts. and neighbouring areas of Central Apennines. Their distribution provides evidence for a complex, and rapidly evolving, paleogeography across a region that was experiencing the transition from foreland to accretionary wedge conditions during the Tortonian and Messinian. The bio-sedimentological features of the calcarenites indicate deposition through gravity flows (turbidity currents) sourced by areas of active benthic, heterozoan-type carbonate production, locally lying at photic depth. Thin-section analysis of >130 samples revealed that the resedimented levels are mainly composed by bioclastic calcarenites, with fragments of bivalves, echinoids, bryozoans, balanids, benthic foraminifera, anellids and red algae, along with subordinate planktonic foraminifera. The calcareous turbidites in the hemipelagic marls (Unita argillosomarnosa) are characterized by the presence of Heterostegina sp., and their main source area was probably lying east, on the undeformed foreland. In contrast, evidence from field mapping, their common association with Cretaceous and Miocene carbonate lithoclasts, and the age of the encasing units, all suggest that the calcarenites in the "brecce della Renga fm." and in the siliciclastic turbidites ("complesso torbiditico altomiocenico laziale-abruzzese") could most likely have a different source. The presence of a carbonate ridge, corresponding today to the NW sector of the Simbruini range, bordered by normal faults exposing the Cretaceous substrate, is proven proven by mappable paleoescarpment tracts onlapped by clastic and hemipelagic deposits. This ridge could have fed surrounding deeper areas with a mixture of lithoclasts and loose bioclastic material, produced through erosion of exposed bedrock coupled with export of sediment that was being produced topping and ... Article in Journal/Newspaper Planktonic foraminifera Sapienza Università di Roma: CINECA IRIS Renga ENVELOPE(13.110,13.110,66.603,66.603) Italian Journal of Geosciences 133 1 85 100 |
institution |
Open Polar |
collection |
Sapienza Università di Roma: CINECA IRIS |
op_collection_id |
ftunivromairis |
language |
English |
topic |
carbonate factory hybrid arenite upper miocene foredeep central apennine carbonate turbidites |
spellingShingle |
carbonate factory hybrid arenite upper miocene foredeep central apennine carbonate turbidites FABBI, SIMONE GALLUZZO, FABRIZIO SANTANTONIO, Massimo Rita Maria Pichezzi Carbonate intercalations in a terrigenous foredeep: Late Miocene examples from the Simbruini Mts. and the Salto Valley (Central Apennines -Italy) |
topic_facet |
carbonate factory hybrid arenite upper miocene foredeep central apennine carbonate turbidites |
description |
Resedimented calcarenites and hybrid arenites are commonly found interbedded with various Upper Miocene terrigenous units (hemipelagic marls, "brecce della Renga fm.", and siliciclastic turbidites) across the Simbruini Mts. and neighbouring areas of Central Apennines. Their distribution provides evidence for a complex, and rapidly evolving, paleogeography across a region that was experiencing the transition from foreland to accretionary wedge conditions during the Tortonian and Messinian. The bio-sedimentological features of the calcarenites indicate deposition through gravity flows (turbidity currents) sourced by areas of active benthic, heterozoan-type carbonate production, locally lying at photic depth. Thin-section analysis of >130 samples revealed that the resedimented levels are mainly composed by bioclastic calcarenites, with fragments of bivalves, echinoids, bryozoans, balanids, benthic foraminifera, anellids and red algae, along with subordinate planktonic foraminifera. The calcareous turbidites in the hemipelagic marls (Unita argillosomarnosa) are characterized by the presence of Heterostegina sp., and their main source area was probably lying east, on the undeformed foreland. In contrast, evidence from field mapping, their common association with Cretaceous and Miocene carbonate lithoclasts, and the age of the encasing units, all suggest that the calcarenites in the "brecce della Renga fm." and in the siliciclastic turbidites ("complesso torbiditico altomiocenico laziale-abruzzese") could most likely have a different source. The presence of a carbonate ridge, corresponding today to the NW sector of the Simbruini range, bordered by normal faults exposing the Cretaceous substrate, is proven proven by mappable paleoescarpment tracts onlapped by clastic and hemipelagic deposits. This ridge could have fed surrounding deeper areas with a mixture of lithoclasts and loose bioclastic material, produced through erosion of exposed bedrock coupled with export of sediment that was being produced topping and ... |
author2 |
Fabbi, Simone Galluzzo, Fabrizio Rita Maria, Pichezzi Santantonio, Massimo |
format |
Article in Journal/Newspaper |
author |
FABBI, SIMONE GALLUZZO, FABRIZIO SANTANTONIO, Massimo Rita Maria Pichezzi |
author_facet |
FABBI, SIMONE GALLUZZO, FABRIZIO SANTANTONIO, Massimo Rita Maria Pichezzi |
author_sort |
FABBI, SIMONE |
title |
Carbonate intercalations in a terrigenous foredeep: Late Miocene examples from the Simbruini Mts. and the Salto Valley (Central Apennines -Italy) |
title_short |
Carbonate intercalations in a terrigenous foredeep: Late Miocene examples from the Simbruini Mts. and the Salto Valley (Central Apennines -Italy) |
title_full |
Carbonate intercalations in a terrigenous foredeep: Late Miocene examples from the Simbruini Mts. and the Salto Valley (Central Apennines -Italy) |
title_fullStr |
Carbonate intercalations in a terrigenous foredeep: Late Miocene examples from the Simbruini Mts. and the Salto Valley (Central Apennines -Italy) |
title_full_unstemmed |
Carbonate intercalations in a terrigenous foredeep: Late Miocene examples from the Simbruini Mts. and the Salto Valley (Central Apennines -Italy) |
title_sort |
carbonate intercalations in a terrigenous foredeep: late miocene examples from the simbruini mts. and the salto valley (central apennines -italy) |
publisher |
SOC GEOLOGICA ITALIANA |
publishDate |
2014 |
url |
http://hdl.handle.net/11573/524172 https://doi.org/10.3301/ijg.2013.13 |
long_lat |
ENVELOPE(13.110,13.110,66.603,66.603) |
geographic |
Renga |
geographic_facet |
Renga |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000332132100007 volume:133 issue:1 firstpage:85 lastpage:100 numberofpages:16 journal:ITALIAN JOURNAL OF GEOSCIENCES http://hdl.handle.net/11573/524172 doi:10.3301/ijg.2013.13 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84894494910 |
op_doi |
https://doi.org/10.3301/ijg.2013.13 |
container_title |
Italian Journal of Geosciences |
container_volume |
133 |
container_issue |
1 |
container_start_page |
85 |
op_container_end_page |
100 |
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1789971975741898752 |