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Danish KHAN LIANG Chao QIU Longwei Kamran MIRZA WANG Yelei Muhammad KASHIF Saif Ur REHMAN WANG Yuzhe TENG Jianbin 《《地质学报》英文版》2023,97(2):589-609
The effect of various depositional parameters including paleoclimate, paleosalinity and provenance, on the depositional mechanism of lacustrine shale is very important in reconstructing the depositional environment. The classification of shale lithofacies and the interpretation of shale depositional environment are key features used in shale oil and gas exploration and development activity. The lower 3rd member of the Eocene Shahejie Formation(Es3x shale) was sel... 相似文献
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Saif Salim Al-Qaydi 《GeoJournal》1999,47(4):583-586
Within universities there has developed a clear theoretical convergence between Geographical Information Systems (GIS) and
geography (Antenuccl, 1991). Studies have revealed that one of the qualified departments to teach GIS within universities
is the geography department. This study focuses on: the importance of establishing GIS as a major curriculum element within
universities. In geography departments, economic geography students require a strong statistical/mathematical background to
allow them to work with major databases. They should know how to design a specific database for economic activities, such
as agriculture and manufacturing, and tertiary industry and how to relate this database to a map, so that changes can be monitored
more accurately. In any aspect of geography spatial location is a key factor and GIS allows spatial patterns to be interpreted
with great facility. Therefore it is important that students have a good knowledge not only of computers and related software
on economic geography, but also on GIS systems (Burrough, 1993). The work of geography students from the United Arab Emirates
(UAE) and other Gulf Co-operation Council (GCC) geography departments is examined to evaluate the importance of training in
GIS technology. This paper evaluates the effects of implementing GIS as a tool in teaching economic geography. At present
there are 15 geography departments in the GCC which offer economic geography. Of those 15 departments, only 3 provide GIS
courses within their curriculum, and 4 have basic equipment, although 6 additional departments are to introduce GIS in the
near future.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
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Iqbaluddin Saif Ud Din Akram Javed 《Journal of the Indian Society of Remote Sensing》1997,25(3):177-186
The morphometric analysis of the surface drainage has been carried out for the four micro-watersheds of Bharatpur district, Rajasthan to quantify the drainage morphometry of the district. The morphochronology of landseape evolution has been described. Banaganga represents anomalous drainage, which causes large scale inundation during rainy season. The strain of post-collision Himalayan tectonics resulted in slope mulation in Bharatpur district which changed slope from westerly to easterly. The landform characteristics of Bharatpur district have been arehieved at the National Informatics Center, District Data Base, Bharatpur is alpha numeric mode. 相似文献
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Ahmed Saif Al-Mikhlafi 《Environmental Geology》2008,54(6):1145-1153
The concentration rare earth elements and Yttrium (REE + Y) were determined in coral sands from Kavaratti Island, Arabian
Sea, India. Chondrite-normalized REE + Y patterns show: (1) high REE concentration particularly light REE (LREE) enrichment;
(2) consistent negative Ce anomaly; (3) nearly chondritic Y/Ho ratios. All these features are consistent with the geochemistry
of well oxygenated seawater with significant terrestrial contribution. The seawater composition of Nd/Yb ratio inferred from
the coral record point to the dominance of LREE more than the heavy REE (HREE). The high terrestrial input rich in LREE and
property of adsorption/scavenging processes of LREE than that of HREE may be the cause. Terrigenous contributions were detected
on the basis of co-occurring trace element concentrations (Sc, Hf and Th) and Y/Ho ratio. Except for La, the REE distribution
coefficients, KD(REE)s, are between 100 and 300. KDs are high comparing to the other elements in biogenic calcite which is
attributed to detrital contamination during elemental incorporation. This study may not reflect original seawater chemistry
but it can be a good proxy to indicate proximity of corals to terrigenous input sources. 相似文献
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