مشروع البحث: Reservir potential, digenetic history and sequence stratigraphy of kiklah formation in garyan section jabal nafusah, nw libya
| dc.contributor.advisor | د.الصادق ميلود غنية | |
| dc.date.accessioned | 2026-06-25T08:52:48Z | |
| dc.date.available | 2026-06-25T08:52:48Z | |
| dc.description | The paragenetic sequence is identified with relative diagenetic timings the feldspar fragments were severely affected during diagenesis as shown by their intense dissolution and alteration to clay minerals, Early-Late dissolution of framework and authigenic minerals/cements had created secondary porosity in sandstones, dissolution and dolomite cementation were the main causes of deterioration of porosity in sandstones. Dissolution of carbonates and some other mineral grains formed some intergranular pores, but some of these pores partially to extensively filled with kaolinite. Authigenic quartz, carbonate cements and clays (kaolinite and Natrolite, Semictite ) an important diagenetic overprint on the samples sandstones, markedly reduce porosity and permeability | |
| dc.description.abstract | The Kiklah Formation is the Lower Cretaceous age, continental clastics Mesozoic rock exposed in extensive outcrop along the escarpment on the eastern part of Jabal Nafusah in Gharyan section. The main technical methods that have been used for this study include, thin section analysis using Polarizing Microscope, Scanning Electronic Microscopy (SEM), X-Ray Diffraction (XRD). This study covers the field works and covers the laboratory work that include preparation of fourteen thin section slides. The selected thin sections were prepared for petrography investigation using a Plane Polarizing Microscope (PPL) and Cross Polarizing Microscope (XPL). Computer cross plotting for petrographycal data analysis, Scanning Electronic Microscopy (SEM) petrography investigation and X-Ray powder diffraction were also used to support the result. The sandstone is texturally immature and mineraliogically mature are essentially quartz arenites. The principle detrital framework constituent are generally mono- crystalline quartz generally from (65-87%) and show small percentages of polycrystalline quartz grains, minor amount of K-feldspar which accounted and estimated in two samples only up to amount (0.5-1.0%), small amounts of lithic rock fragment (0-1%). Detrital mud matrix grains were estimated in some samples the mean amount between (1-5%) and heavy minerals occur locally as trace. Major authigenic cements are dolomite, quartz, iron oxide and clay minerals (Kaolinite, Smectite, Illite, Iron oxide, and Natrolite). | |
| dc.identifier | 5984 | |
| dc.identifier.uri | https://dspace.academy.edu.ly/handle/123456789/2368 | |
| dc.subject | history and sequence stratigraphy of kiklah formation | |
| dc.title | Reservir potential, digenetic history and sequence stratigraphy of kiklah formation in garyan section jabal nafusah, nw libya | |
| dspace.entity.type | Project | |
| project.endDate | 2015 | |
| project.funder.name | علوم الارض | |
| project.investigator | نزيهة مصطفى عزيز احمد | |
| project.startDate | 2014 |