INTRODUCTION

JURASSIC TIME

EARLY CRETACEOUS TIME

LATE  CRETACEOUS TIME

SEA LEVEL

CONCLUSIONS

        The break up of Gondwana and Laurasia continents caused worldwide radical climatologic, environmental, and geographic changes. These dramatic changes began in the Jurassic time, and were probably a response to the effects of a mantle plume and volcanic activity (Bryan, 1995). The main magmatic province within Gondwana extended from Australia through South Africa to Nigeria where is located the present Niger delta. The products of this magmata province affected the configuration of the super continent Gondwana (Fig. 2). The Jurassic period ended with the separation of the continents in the study area and opened the way for the formation of basins in the South Atlantic Ocean. The Late Jurassic climate continued into Early Cretaceous time at about 162 Ma.
 

 

---

home | about site | contact us | top
Copyright © 2001 University of South Carolina - Geology Department All Rights Reserved

Maintained by Alfredo Oba (oalfredo@geol.sc.edu, Tel 803 777-3272).   Last updated 27th April 2001