Abstract The sandstone units of the Early Cretaceous Lower Goru Formation are significant reservoir for gas, oil, and condensates in Indus Basin Pakistan. Even though these sandstones rocks hydrocarbon exploration, diagenetic controls on properties poorly documented. For effective production, appraisal a promising reservoir, diagenesis must be comprehensively analyzed first. this study, core sa...

The oxidation and reduction that occur during early diagenesis of sediments has been studied in the interstitial waters of a rapidly accumulating sedimentary sequence from the Mediterranean margin of Spain. A series of reactions that are mediated by progressively lower free energy derived from oxidation of organic matter is evident in the sedimentary sequence. Iron and manganese are rapidly red...

We present a framework for interpreting the carbon isotopic composition of sedimentary rocks, which in turn requires a fundamental reinterpretation of the carbon cycle and redox budgets over Earth's history. We propose that authigenic carbonate, produced in sediment pore fluids during early diagenesis, has played a major role in the carbon cycle in the past. This sink constitutes a minor compon...

This autobiography covers the past 55 years of my research in geochemistry. I try to show how chemical principles can be applied to a wide variety of geological problems, ranging from iron sulfide mineralogy, to carbonate chemistry in the oceans, to silicate mineral surface chemistry during weathering, to biogeochemical changes during early diagenesis, to plants and weathering, to models for th...

bution and early-diagenesis in salt marsh sediments from the Medway Estuary, Kent, UK. Estuarine Coastal and Shelf Science 57 (1–2), 43–54. Spencer, K.L., Dewhurst, R.E., Penna, P., 2005. Potential impacts of water injection dredging on water quality and ecotoxicity in Limehouse Basin. Chemosphere. Sullivan, N., 2000. The use of agitation dredging, water injection dredging and sidecasting: resu...

The present work focuses on the upper Cretaceous (Cenomanian-early Campanian) carbonate successions in selected wells from northwestern Iraq. These are represented by Gir Bir Turonian), Wajna (late Santonian) and Mushorah (early Formations. succession has affected early burial near-surface, unconformity-related deep diagenesis cementation, neomorphism, dolomitization, dedolomitization, silicifi...