Cretaceous-Paleogene biomagnetostratigraphy of ODP Leg 121 sites
Fuente:
PANGAEA
Guardado en:
| Autores principales: | , , , , , , , , , , , , , , , , |
|---|---|
| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
1991
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1867167665649352704 |
|---|---|
| author | Pospichal, James J Dehn, Jonathan Driscoll, Neal W van Eijden, AJM Farrell, John W Fourtanier, Elisabeth Gamson, Paul Gee, Jeff S Janecek, Thomas R Jenkins, D Graham Klootwijk, Christian T Nomura, Ritsuo Owen, Robert M Rea, David K Resiwati, Purtyasti Smit, Jan Smith, Guy M |
| author_facet | Pospichal, James J Dehn, Jonathan Driscoll, Neal W van Eijden, AJM Farrell, John W Fourtanier, Elisabeth Gamson, Paul Gee, Jeff S Janecek, Thomas R Jenkins, D Graham Klootwijk, Christian T Nomura, Ritsuo Owen, Robert M Rea, David K Resiwati, Purtyasti Smit, Jan Smith, Guy M |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Broken Ridge, in the eastern Indian Ocean, is a shallow-water volcanic platform which formed during the Early to middle Cretaceous at which time it comprised the northern portion of the Kerguelen-Heard Plateau. Rifting during the middle Eocene and subsequent seafloor spreading has moved Broken Ridge about 20 infinity N to its present location. The sedimentary section of Broken Ridge includes Turonian-lower Eocene limestone and chalk with volcanic ash, an interval of detrital sands and gravels associated with middle Eocene rifting and uplift, and a middle-late Oligocene unconformity overlain by a thin section of Neogene-Holocene pelagic calcareous ooze. This paper summarizes the available post-cruise biostratigraphic and magnetostratigraphic data for the Cretaceous-Paleogene section on Broken Ridge. The synthesis of this information permits a more precise interpretation of the timing of events in the history of Broken Ridge, in particular the timing and duration of the middle Eocene rifting event. Paleontologic data support rapid flexural uplift of Broken Ridge in response to mechanical rather than thermal forces. Other highlights of the section include a complete Cretaceous/Tertiary boundary and an opportunity for first-order correlation of Paleogene diatom stratigraphy with that of the calcareous groups. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_759588 |
| institution | PANGAEA |
| language | en |
| publishDate | 1991 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Cretaceous-Paleogene biomagnetostratigraphy of ODP Leg 121 sites Pospichal, James J Dehn, Jonathan Driscoll, Neal W van Eijden, AJM Farrell, John W Fourtanier, Elisabeth Gamson, Paul Gee, Jeff S Janecek, Thomas R Jenkins, D Graham Klootwijk, Christian T Nomura, Ritsuo Owen, Robert M Rea, David K Resiwati, Purtyasti Smit, Jan Smith, Guy M 121-752; 121-752A; 121-752B; 121-753A; 121-754B; 121-755A; COMPCORE; Composite Core; DRILL; Drilling/drill rig; Joides Resolution; Leg121; Ocean Drilling Program; ODP; South Indian Ridge, South Indian Ocean Broken Ridge, in the eastern Indian Ocean, is a shallow-water volcanic platform which formed during the Early to middle Cretaceous at which time it comprised the northern portion of the Kerguelen-Heard Plateau. Rifting during the middle Eocene and subsequent seafloor spreading has moved Broken Ridge about 20 infinity N to its present location. The sedimentary section of Broken Ridge includes Turonian-lower Eocene limestone and chalk with volcanic ash, an interval of detrital sands and gravels associated with middle Eocene rifting and uplift, and a middle-late Oligocene unconformity overlain by a thin section of Neogene-Holocene pelagic calcareous ooze. This paper summarizes the available post-cruise biostratigraphic and magnetostratigraphic data for the Cretaceous-Paleogene section on Broken Ridge. The synthesis of this information permits a more precise interpretation of the timing of events in the history of Broken Ridge, in particular the timing and duration of the middle Eocene rifting event. Paleontologic data support rapid flexural uplift of Broken Ridge in response to mechanical rather than thermal forces. Other highlights of the section include a complete Cretaceous/Tertiary boundary and an opportunity for first-order correlation of Paleogene diatom stratigraphy with that of the calcareous groups. |
| title | Cretaceous-Paleogene biomagnetostratigraphy of ODP Leg 121 sites |
| topic | 121-752; 121-752A; 121-752B; 121-753A; 121-754B; 121-755A; COMPCORE; Composite Core; DRILL; Drilling/drill rig; Joides Resolution; Leg121; Ocean Drilling Program; ODP; South Indian Ridge, South Indian Ocean |
| url | https://doi.org/10.1594/PANGAEA.759588 |