| _version_ | 1867167664402595840 |
|---|---|
| author | Chamley, Hervè Debrabant, Pierre Robert, Christian Mascle, Georges Réhault, Jean-Pierre Aprahamian, Jean |
| author_facet | Chamley, Hervè Debrabant, Pierre Robert, Christian Mascle, Georges Réhault, Jean-Pierre Aprahamian, Jean |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Late Miocene sediments from ODP Sites 652 and 654, drilled on the Sardinian margin in the Western Tyrrhenian Sea, are investigated through mineralogical, micromorphological, geochemical, and microgeochemical analyses. Clay associations appear to be little controlled by conditions of deposition, and largely depend on pre- and post-depositional conditions. The sedimentary series from Central Mediterranean gives very different geodynamic information, according to the sector considered. While relatively stable conditions, like those encountered in Caltanissetta Basin, Sicily, favor the mineralogical expression of warm-temperate and subarid Messinian climate, the Eastern Sardinia margin (Site 654) clay suites mainly reflect the transition from tectonically active to relaxed conditions. The series deposited at the foot of the same margin above a thinner crust (Site 652) experienced the effects of burial diagenesis, enhanced by strong geothermal gradient. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_745818 |
| institution | PANGAEA |
| language | en |
| publishDate | 1990 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Mineralogy and geochemistry of latest Miocene deposits in the Tyrrhenian Sea Chamley, Hervè Debrabant, Pierre Robert, Christian Mascle, Georges Réhault, Jean-Pierre Aprahamian, Jean 107-652A; 107-653B; 107-654A; DRILL; Drilling/drill rig; Joides Resolution; Leg107; Ocean Drilling Program; ODP; Tirreno Sea Late Miocene sediments from ODP Sites 652 and 654, drilled on the Sardinian margin in the Western Tyrrhenian Sea, are investigated through mineralogical, micromorphological, geochemical, and microgeochemical analyses. Clay associations appear to be little controlled by conditions of deposition, and largely depend on pre- and post-depositional conditions. The sedimentary series from Central Mediterranean gives very different geodynamic information, according to the sector considered. While relatively stable conditions, like those encountered in Caltanissetta Basin, Sicily, favor the mineralogical expression of warm-temperate and subarid Messinian climate, the Eastern Sardinia margin (Site 654) clay suites mainly reflect the transition from tectonically active to relaxed conditions. The series deposited at the foot of the same margin above a thinner crust (Site 652) experienced the effects of burial diagenesis, enhanced by strong geothermal gradient. |
| title | Mineralogy and geochemistry of latest Miocene deposits in the Tyrrhenian Sea |
| topic | 107-652A; 107-653B; 107-654A; DRILL; Drilling/drill rig; Joides Resolution; Leg107; Ocean Drilling Program; ODP; Tirreno Sea |
| url | https://doi.org/10.1594/PANGAEA.745818 |