REGIONAL AND LOCAL CONTROL ON LIMESTONE FACIES IN THE CRETACEOUS PINDIGA FORMATION (KANAWA MEMBER), NE NIGERIA.

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dc.contributor.authorSALEH, YAMTA GRACE
dc.date.accessioned2014-05-30T08:28:37Z
dc.date.available2014-05-30T08:28:37Z
dc.date.issued2008-05
dc.descriptionA THESIS SUBMITTED TO THE DEPARTMENT OF GEOLOGY, FACULTY OF SCIENCE AHMADU BELLO UNIVERSITY, ZARIA IN PARTIAL FULFILLMENT OF THE REQUIREMENT FOR THE AWARD OF MASTER OF SCIENCE DEGREE IN GEOLOGY (PALEONTOLOGY AND STRATIGRAPHY) MAY, 2008en_US
dc.description.abstractThe Kanawa Member of the Pindiga Formation at Ashaka Quarry, Pindiga stream and Deba Habe stream (Northeast Nigeria) was studied using Shaw’s graphic correlation method. coupled with sequence stratigraphic data. For the former method, the first and the last appearances of ammonites species common to the two sections were utilized. For the latter parasequence boundaries were used. The ammonites occur only in the limestones; they do not occur in the shales possibly due to anoxic bottom conditions at that time. The line of correlation suggested that some of the limestones at Ashaka and Pindiga are continuous and contemporaneous, namely units D, F and R at Ashaka and units A, H, and R at Pindiga respectively. The crossed- bedded limestone units G-J at Ashaka correlate with shales in the Pindiga section and are local developments. Sequence stratigraphic data can, in some cases, is shown to produce correlation that matches that based on biostratigraphic data. In particular, the ammonite Pseudaspidoceras paganum is uniquely found upon a marine flooding surface. The closely – related genus Burroceras sp is also confined to marly, relatively deep-water limestones. Eustatic sea-level fluctuation is the most likely central over the development of regionally continuous limestones though climatic factors could also be important. Local tectonics affected the Ashaka area, these factors often being more important than the regional controls.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/4802
dc.language.isoenen_US
dc.subjectREGIONAL,en_US
dc.subjectLOCAL,en_US
dc.subjectCONTROL,en_US
dc.subjectLIMESTONE,en_US
dc.subjectFACIES,en_US
dc.subjectCRETACEOUS,en_US
dc.subjectPINDIGA,en_US
dc.subjectFORMATION,en_US
dc.subject(KANAWA MEMBER),en_US
dc.subjectNE NIGERIA.en_US
dc.titleREGIONAL AND LOCAL CONTROL ON LIMESTONE FACIES IN THE CRETACEOUS PINDIGA FORMATION (KANAWA MEMBER), NE NIGERIA.en_US
dc.typeThesisen_US
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