معرفی کتاب مینرالوژی
Mineralogy and Optical Mineralogy
Written by M. Darby Dyar and Mickey E. Gunter
Illustrations and animations by Dennis Tasa




عکاس: آقاي حسين بشيري
گسل و لايه گسله با سه خط شكستگي كه تمام لايه ها را در امتداد عمودي قطع كرده است.
جنوب شرق تبريز-مازندران ورودي دانشگاه آزاد تبريز
Photomicrographs of Rock Fragments

This photograph shows a sediment with many rock fragments. The two fragments in the center of the photograph above the large quartz grain are made up of fine-grained material which cannot be resolved at this magnification. They are fragments of shale or slate, and the characteristic platy shape is a result of derivation from a cleaved source rock containing abundant platy mimerals. The sediment is very poorly sorted, containing many small rock fragments, quartz grains and at least one twinned feldspar(in the center, near the top), as well as the large quartz grain, part of which is seen at the base of the photograph
تصاویری از ساختمان های رسوبی
برای مشاهده تصاویر به ادامه مطلب مراجعه نمایید.

Non-skeletal Grains in Carbonate Rocks / Ooids
در ادامه مطالبی درباره تقسیم بندی سنگ های کربناته که از نظر شما گذشت از این پس به معرفی و جایگاه تشکیل عناصر آلوکم و اورتوکم ها در سنگ های کربناته خواهیم پرداخت.
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(carbonate play types(Part.1 |
There are several simplistic models that can be used to summarize the observed variation in carbonate play types
Carbonate reservoirs that form stratigraphic traps may have lens-like, sheet-like or ribbon geometry. Carbonate bodies with lens-like geometries include biohermal or reef buildups that form during and after rapid relative sea level rises as well as down-slope debris fans. In contrast the sheet-like geometries may include muddy or grain-dominated progradational carbonate sheets that are terminated by exposure or flooding or prolonged stillstands. Trapping of hydrocarbons in reservoirs with sheet-like geometry requires some structuring before migration. Finally, plays with ribbon geometry are formed by carbonates that accumulate at the platform margin. These are commonly reefs or shoals but may be sand-filled tidal channels or beaches.
Lens Geometry
