https://egeology.blogfa.com بانک مقالات،کتابها،مطالب،فلشها و نرم افزارهای تخصصی زمین شناسی fa blogfa.com Tue, 22 Oct 2013 06:23:00 +0330 https://egeology.blogfa.com/post/844 صفحه نخست / صفحه دوم / صفحه سوم Age of the Earth's core Recent research to determine the age of the Earth's core used hafnium–tungsten chronometry. ادامه مطلب آندزیت و نحوه تشکیل آن - Andesite A typical volcanic rock erupted from a volcano associated with convergent plate boundaries. The process of subduction, which... ادامه مطلب سازند آهن نواری - Banded iron formation - BIF A sedimentary rock that was commonly deposited during the Precambrian. Tue, 22 Oct 2013 06:23:00 +0330 egeology egeology.blogfa.com/post/844 https://egeology.blogfa.com/post/843 Aggregates Introduction: Aggregates are composed of particles of robust rock derived from natural sands and gravels or from the crushing of quarried rock. The strength and the elastic modulus of the rock should ideally match the anticipated properties of the final product. Aggregates are used in concrete, mortar, road materials with a bituminous binder, and unbound construction (including railway-track ballast). Sun, 07 Aug 2011 07:14:00 +0330 egeology egeology.blogfa.com/post/843 https://egeology.blogfa.com/post/842 Pan-African Orogeny Introduction The term ‘Pan-African’ was coined byWQKennedy in 1964 on the basis of an assessment of available Rb–Sr and K–Ar ages in Africa. The Pan-African was interpreted as a tectono-thermal event, some 500 Ma ago, during which a number of mobile belts formed, surrounding older cratons.The concept was then extended to the Gondwana continents (Figure 1 ) although regional names were proposed such as Brasiliano for South America, Tue, 02 Aug 2011 09:58:00 +0330 egeology egeology.blogfa.com/post/842 https://egeology.blogfa.com/post/840 صفحه نخست / صفحه دوم / صفحه سوم کانی های رسی - Clay minerals خاکستر آتشفشانی فناوريهاي جديد در هيدرومتالورژي زئوشیمی آلی - Organic geochemistry Petroleum geology - زمین شناسی نفت موجودات عمیق دریایی-Deep-sea fauna نهشت کانسارها و کانی ها 1-Ore and mineral deposits نهشت کانسارها و کانی ها 2 -Ore and mineral deposits اطلس رنگی فسیل شناسی استخراج الکتریکی آبهای زیرزمینی ماسراهای زغال سنگ-Macerals میکا-MICA میکا- Mica تونل-Tunnel علوم وابسته به یخچالها و Sun, 05 Dec 2010 08:10:00 +0330 egeology egeology.blogfa.com/post/840 https://egeology.blogfa.com/post/839 بهينه سازي عوامل مؤثر بر بازيابي نمونه کانسنگ طلاي طرقبه به روش سيانوراسيون: در اين تحقيق حد مناسب خردايش، غلظت محلول سيانور ، pH مناسب و زمان بهينة سيانوراسيون تعيين گرديد. مقدار مصرف سيانور و آهک براي تنظيم pH نيز مشخص شد. با توجه به نتايج حاصل از آزمايش سيانوراسيون با دانه بندي هاي مختلف، با افزايش... جوهرزدائي و بازيابي کاغذ به روش فلوتاسيون دراين تحقيق جوهرزدائي و بازيافت کاغذهاي چاپ شيميايي به روش فلوتاسيون مورد بررسي قرار گرفت. Sun, 05 Dec 2010 08:09:06 +0330 egeology egeology.blogfa.com/post/839 https://egeology.blogfa.com/post/838 Acanthodii A diverse group of early jawed fishes from the Paleozoic Era, usually classified as a distinct class of vertebrates. Most acanthodians have tiny body scales with a cross section like that of an onion, the layers reflecting incremental scale growth. Most acanthodians have strong spines at the leading edges of all fins except for the caudal (tail) fin. Acanthodians mostly were small fishes with large mouths and large eyes, suggesting an active, Sun, 05 Dec 2010 08:07:20 +0330 egeology egeology.blogfa.com/post/838 https://egeology.blogfa.com/post/837 Acanthometrida A genus of marine protozoans in the class Acantharea. The kingdom Protozoa contains 18 phyla. One of the parvkingdoms (a hierarchical classification between kingdom and superphylum that is controversial and not officially recognized as such) is the Actinopoda (originally a class) containing two phyla, Heliozoa and Radiozoa. Within the Radiozoa is the class Acantharea, in which the genus Acanthometrida is placed. Sun, 05 Dec 2010 07:57:06 +0330 egeology egeology.blogfa.com/post/837 https://egeology.blogfa.com/post/836 Aberration (optics) A departure of an optical image-forming system from ideal behavior. Ideally, such a system will produce a unique image point corresponding to each object point. In addition, every straight line in the object space will have as its corresponding image a unique straight line. A similar one-to-one correspondence will exist between planes in the two spaces. This type of mapping of object space into image space is called a collinear Sun, 05 Dec 2010 07:45:16 +0330 egeology egeology.blogfa.com/post/836 https://egeology.blogfa.com/post/835 Abalone Common name in California for several species of marine gastropod mollusks in the family Haliotidae; also known as ear shells in many tropical and warm-temperate seas, as awabi in Japan, as paua in New Zealand, and as ormers in the Mediterranean region, Spain, and the English Channel. The haliotid limpets constitute the most successful family of the primitive two-gilled gastropods included in the order Archaeogastropoda. Sun, 05 Dec 2010 07:22:21 +0330 egeology egeology.blogfa.com/post/835 https://egeology.blogfa.com/post/833 مجموعه ای کامل و نفیس از جزوه های زمین شناسی مجموعه ای کامل و نفیس از جزوه های مهندسی برق انتخاب زبان فارسی LANGUAGE - BRITISH جستجوی پیشرفته دانلود کتابهای زمین شناسی تحقیق دانشجویی دانلود نقشه های جهان کتاب های زمین شناسی موسیقی آنلاین مقالات جدید (۱۰/۱۰/۱۳۸۸) پهنه بندي خطر فرسايش پذيري و برآورد ميزان رسوب زائي در حوزه آبريز سد درودزن سدها از جمله طرح هاي بزرگ و سرمايه هاي ملي كشور بشمار مي آيند. Mon, 24 Aug 2009 07:26:00 +0330 egeology egeology.blogfa.com/post/833