MUD DIAPIRS OF THE MEDITERRANEAN RIDGE: SEDIMENTOLOGICAL AND MICROPALEONTOLOGICAL STUDY OF THE MUD BRECCIA
Two recent sea-going expeditions showed that mud diapirism is a common feature in the accretionary wedge of the Mediterranean Ridge, but unlike in other prisms, it is well expressed exclusively in the most elevated areas of the Ridge. Three diapiric fields were discovered on the Mediterranean Ridge...
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Milano University Press
2017
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ftdoajarticles:oai:doaj.org/article:11c1aafc14514ddaaf9e4e781b669a29 2023-10-01T03:59:01+02:00 MUD DIAPIRS OF THE MEDITERRANEAN RIDGE: SEDIMENTOLOGICAL AND MICROPALEONTOLOGICAL STUDY OF THE MUD BRECCIA FABIO STAFFINI SILVIA SPEZZAFERRI FULVIA AGHIB 2017-08-01T00:00:00Z https://doi.org/10.13130/2039-4942/8908 https://doaj.org/article/11c1aafc14514ddaaf9e4e781b669a29 EN eng Milano University Press https://riviste.unimi.it/index.php/RIPS/article/view/8908 https://doaj.org/toc/0035-6883 https://doaj.org/toc/2039-4942 0035-6883 2039-4942 doi:10.13130/2039-4942/8908 https://doaj.org/article/11c1aafc14514ddaaf9e4e781b669a29 Rivista Italiana di Paleontologia e Stratigrafia, Vol 99, Iss 2 (2017) Stratigraphy Accretionary prism Mud diapirism Mediterranean Ridge Mud Breccia Geology QE1-996.5 Paleontology QE701-760 article 2017 ftdoajarticles https://doi.org/10.13130/2039-4942/8908 2023-09-03T00:45:45Z Two recent sea-going expeditions showed that mud diapirism is a common feature in the accretionary wedge of the Mediterranean Ridge, but unlike in other prisms, it is well expressed exclusively in the most elevated areas of the Ridge. Three diapiric fields were discovered on the Mediterranean Ridge and informally called, from west to east, Pan di Zucchero, Prometheus 2 and Olimpi. They are located on the crestal part of the Mediterranean Ridge between Creta and the Cirenaic Promontory. Sedimentological, micropaleontological, and mineralogic investigations were performed on the mud breccia recovered in 15 cores raised during cruises BAN88 and BAN89. The sedimentological analyses allowed to recognize several sedimentary facies which are suggestive of different emplacement processes: 1) three massive facies are indicative of intrusion; 2) three organized facies are indicative of submarine extrusion and probably reworking. The micropaleontological study based on planktonic foraminifera and calcareous nannofossils provided an Oligocene age for the source sediments and/or for the sediments possibly involved in the diapiric processes of the Pan di Zucchero, and an Early Miocene age for the Olimpi and Prometheus 2 fields. No evidence was found of the typical Messinian lithologies, such as dolomite and gypsum, and microfossils ("lago-mare" biofacies). X-ray diffraction analyses allow to identify the major mineralogic component of the mud breccia and a westward decrease in the smectite content. Our investigations reveal that major differences occur between the Pan di Zuccchero and Olimpi areas, whereas minor differences are recorded between the Olimpi and Prometheus 2. Moreover, the Napoli Dome, located in the Olimpi area, differs from the other diapirs in several sedimentological, micropaleontological and mineralogic characters, and is interpreted as a mud volcano. Article in Journal/Newspaper Planktonic foraminifera Directory of Open Access Journals: DOAJ Articles |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Stratigraphy Accretionary prism Mud diapirism Mediterranean Ridge Mud Breccia Geology QE1-996.5 Paleontology QE701-760 |
spellingShingle |
Stratigraphy Accretionary prism Mud diapirism Mediterranean Ridge Mud Breccia Geology QE1-996.5 Paleontology QE701-760 FABIO STAFFINI SILVIA SPEZZAFERRI FULVIA AGHIB MUD DIAPIRS OF THE MEDITERRANEAN RIDGE: SEDIMENTOLOGICAL AND MICROPALEONTOLOGICAL STUDY OF THE MUD BRECCIA |
topic_facet |
Stratigraphy Accretionary prism Mud diapirism Mediterranean Ridge Mud Breccia Geology QE1-996.5 Paleontology QE701-760 |
description |
Two recent sea-going expeditions showed that mud diapirism is a common feature in the accretionary wedge of the Mediterranean Ridge, but unlike in other prisms, it is well expressed exclusively in the most elevated areas of the Ridge. Three diapiric fields were discovered on the Mediterranean Ridge and informally called, from west to east, Pan di Zucchero, Prometheus 2 and Olimpi. They are located on the crestal part of the Mediterranean Ridge between Creta and the Cirenaic Promontory. Sedimentological, micropaleontological, and mineralogic investigations were performed on the mud breccia recovered in 15 cores raised during cruises BAN88 and BAN89. The sedimentological analyses allowed to recognize several sedimentary facies which are suggestive of different emplacement processes: 1) three massive facies are indicative of intrusion; 2) three organized facies are indicative of submarine extrusion and probably reworking. The micropaleontological study based on planktonic foraminifera and calcareous nannofossils provided an Oligocene age for the source sediments and/or for the sediments possibly involved in the diapiric processes of the Pan di Zucchero, and an Early Miocene age for the Olimpi and Prometheus 2 fields. No evidence was found of the typical Messinian lithologies, such as dolomite and gypsum, and microfossils ("lago-mare" biofacies). X-ray diffraction analyses allow to identify the major mineralogic component of the mud breccia and a westward decrease in the smectite content. Our investigations reveal that major differences occur between the Pan di Zuccchero and Olimpi areas, whereas minor differences are recorded between the Olimpi and Prometheus 2. Moreover, the Napoli Dome, located in the Olimpi area, differs from the other diapirs in several sedimentological, micropaleontological and mineralogic characters, and is interpreted as a mud volcano. |
format |
Article in Journal/Newspaper |
author |
FABIO STAFFINI SILVIA SPEZZAFERRI FULVIA AGHIB |
author_facet |
FABIO STAFFINI SILVIA SPEZZAFERRI FULVIA AGHIB |
author_sort |
FABIO STAFFINI |
title |
MUD DIAPIRS OF THE MEDITERRANEAN RIDGE: SEDIMENTOLOGICAL AND MICROPALEONTOLOGICAL STUDY OF THE MUD BRECCIA |
title_short |
MUD DIAPIRS OF THE MEDITERRANEAN RIDGE: SEDIMENTOLOGICAL AND MICROPALEONTOLOGICAL STUDY OF THE MUD BRECCIA |
title_full |
MUD DIAPIRS OF THE MEDITERRANEAN RIDGE: SEDIMENTOLOGICAL AND MICROPALEONTOLOGICAL STUDY OF THE MUD BRECCIA |
title_fullStr |
MUD DIAPIRS OF THE MEDITERRANEAN RIDGE: SEDIMENTOLOGICAL AND MICROPALEONTOLOGICAL STUDY OF THE MUD BRECCIA |
title_full_unstemmed |
MUD DIAPIRS OF THE MEDITERRANEAN RIDGE: SEDIMENTOLOGICAL AND MICROPALEONTOLOGICAL STUDY OF THE MUD BRECCIA |
title_sort |
mud diapirs of the mediterranean ridge: sedimentological and micropaleontological study of the mud breccia |
publisher |
Milano University Press |
publishDate |
2017 |
url |
https://doi.org/10.13130/2039-4942/8908 https://doaj.org/article/11c1aafc14514ddaaf9e4e781b669a29 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Rivista Italiana di Paleontologia e Stratigrafia, Vol 99, Iss 2 (2017) |
op_relation |
https://riviste.unimi.it/index.php/RIPS/article/view/8908 https://doaj.org/toc/0035-6883 https://doaj.org/toc/2039-4942 0035-6883 2039-4942 doi:10.13130/2039-4942/8908 https://doaj.org/article/11c1aafc14514ddaaf9e4e781b669a29 |
op_doi |
https://doi.org/10.13130/2039-4942/8908 |
_version_ |
1778532428950798336 |