Relative Sea-level Changes of the Lower Cretaceous Deposits in the Chotts Area of Southern Tunisia

LAZZEZ MARZOUK & MOHAMED BEN YOUSSEF

Makale detayları

Relative Sea-level Changes of the Lower Cretaceous Deposits in the Chotts Area of Southern Tunisia

Yazarlar:

LAZZEZ MARZOUK & MOHAMED BEN YOUSSEF

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Earth Sciences 2008 Vol.17 Issue 4, pp.835-845

Belge Tipi:

Makale

Yayın Tarihi:

3/2008

Belge Dili:

Türkçe

Document ID (Org No.):

2000732428

Sıklık:

İki Aylık

eISSN:

1303-619X

pISSN:

1300-0985

Özet:

 

A transition facies between evaporate and clay, carbonate and siliciclastic deposits occurs within the Lower Cretaceous of Southern Tunisia. The sedimentary deposits comprise four major transgressive-regressive sedimentary sequences with distinctive sabkha, tidal to shallow carbonate marine platform, and mixed siliciclastic ramp environments. Sedimentation rates, as well as thickness and facies changes were controlled by tectonic, climatic and eustatic factors. Transgression pulses encompassing the whole Late Hauterivian-Barremian, Early Aptian and Late Albian have controlled the basin infill. Evaporate and siliciclastic systems pass gradually to carbonate deposition in the Chotts area. Our sedimentation model helps to decipher the roles of tectonics and, to a lesser extent, climate and palaeogeographic changes as the key factors of evaporate, carbonate and siliciclastic deposit sequences. Furthermore, sea level changes exert additional control on their environmental differentiations in such an ancient sedimentary basin. The sedimentary environments and palaeogegraphy in the Chotts chain during Hauterivian to Albian time are also reconstructed.

 

A transition facies between evaporate and clay, carbonate and siliciclastic deposits occurs within the Lower Cretaceous of Southern Tunisia. The sedimentary deposits comprise four major transgressive-regressive sedimentary sequences with distinctive sabkha, tidal to shallow carbonate marine platform, and mixed siliciclastic ramp environments. Sedimentation rates, as well as thickness and facies changes were controlled by tectonic, climatic and eustatic factors. Transgression pulses encompassing the whole Late Hauterivian-Barremian, Early Aptian and Late Albian have controlled the basin infill. Evaporate and siliciclastic systems pass gradually to carbonate deposition in the Chotts area. Our sedimentation model helps to decipher the roles of tectonics and, to a lesser extent, climate and palaeogeographic changes as the key factors of evaporate, carbonate and siliciclastic deposit sequences. Furthermore, sea level changes exert additional control on their environmental differentiations in such an ancient sedimentary basin. The sedimentary environments and palaeogegraphy in the Chotts chain during Hauterivian to Albian time are also reconstructed.

Makale detayları

Relative Sea-level Changes of the Lower Cretaceous Deposits in the Chotts Area of Southern Tunisia

Yazarlar: LAZZEZ MARZOUK & MOHAMED BEN YOUSSEF

Yayıncı: TUBITAK

Dergi: Turkish Journal of Earth Sciences 2008 Vol.17 Issue 4, pp.835-845

Belge Tipi: Makale

Yayın Tarihi: 3/2008

Belge Dili: Türkçe

Document ID (Org No.): 2000732428

Sıklık: İki Aylık

eISSN: 1303-619X

pISSN: 1300-0985

Sayı

Yazarlar:

LAZZEZ MARZOUK & MOHAMED BEN YOUSSEF

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Earth Sciences 2008 Vol.17 Issue 4, pp.835-845

Belge Tipi:

Makale

Yayın Tarihi:

3/2008

Belge Dili:

Türkçe

Document ID (Org No.):

2000732428

Sıklık:

İki Aylık

eISSN:

1303-619X

pISSN:

1300-0985