کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9463109 | 1622406 | 2005 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Quantitative stratigraphy of rudist limestones and its bearing on spatial organisation of rudist communities: the Late Barremian, Urgonian, sequences of Provence (S.E. France)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Quantitative stratigraphy of rudist limestones and its bearing on spatial organisation of rudist communities: the Late Barremian, Urgonian, sequences of Provence (S.E. France) Quantitative stratigraphy of rudist limestones and its bearing on spatial organisation of rudist communities: the Late Barremian, Urgonian, sequences of Provence (S.E. France)](/preview/png/9463109.png)
چکیده انگلیسی
Rudist beds in platform carbonates of Late Barremian age (Early Cretaceous) cropping out in the Marseille region (Provence, SE France) possess a substantial lateral continuity (>40 km) whereas associated rudist bodies tend to be less continuous. Transition probabilities (Markov chain analysis) are used at a regional scale to test the lateral continuity of rudist bodies and their four associated rudist assemblages. Each rudist assemblage has a specific probability to be adjacent to itself or to any one. At a local scale, analysing the variations of transition probabilities as a function of distance, using various proxies, shows a periodic spatial trend, the style of which depends on the type of rudist assemblage, i.e., community type. The foregoing documents two groups with different properties. Group 1 includes two communities characterised by small forms restricted to very shallow and muddy settings, organised spatially into small patches (c. 1000-1500 m) with moderate spacing (c. 1500-2000 m). Group 2 includes two communities characterised by mixed size or large forms, typical of deeper water and more sandy settings, organised spatially into large patches (c. 3000 m) with a larger spacing (c. 3000-4000 m). The internal architecture and the dimensions of these rudist bodies argue against a reefal nature. Quantitative estimates of lateral continuity and spatial variations of rudist bodies have a significant potential for reservoir modelling of hydrocarbon-bearing rudist-rich platform carbonates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 215, Issues 3â4, 6 January 2005, Pages 265-284
Journal: Palaeogeography, Palaeoclimatology, Palaeoecology - Volume 215, Issues 3â4, 6 January 2005, Pages 265-284
نویسندگان
M. Fenerci-Masse, J.P. Masse, E. Pernarcic,