منابع مشابه
Stratigraphy and Geologic Settings of Gold Placers in the Cariboo Mining District
This report provides details on field activities in placer geology conducted by the Surficial Geology Unit of the British Columbia Geological Survey Branch. In 1989. studies of gold-hearing placer deposits at active mines were undertaken with the objective of identifying geological criteria useful for recognizing placer potential. This research was continued in I990 and a total of over 60 diffe...
متن کاملSequence Stratigraphy
Sequence stratigraphy is the study of sediments and sedimentary rocks in terms of repetitively arranged facies and associated stratal geometry (Vail 1987; Van Wagoner et al 1988, 1990; Christie-Blick 1991). It is a technique that can be traced back to the work of Sloss et al (1949), Sloss (1950, 1963), and Wheeler (1958) on interregional unconformities of the North American craton, but it becam...
متن کاملStratigraphy of the Anthropocene.
The Anthropocene, an informal term used to signal the impact of collective human activity on biological, physical and chemical processes on the Earth system, is assessed using stratigraphic criteria. It is complex in time, space and process, and may be considered in terms of the scale, relative timing, duration and novelty of its various phenomena. The lithostratigraphic signal includes both di...
متن کاملChildhood gonorrhoea in Auckland.
AIM To review the Auckland experience of childhood gonorrhoea, with particular regard to inter-agency management and medicolegal outcome. METHODS Retrospective review of medical records at a specialist child abuse assessment unit, and follow up with other agencies involved. RESULTS Twelve cases of genital gonorrhoea in pre-pubertal children in five years, in contrast to two cases in the pre...
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ژورنال
عنوان ژورنال: New Zealand Journal of Geology and Geophysics
سال: 1961
ISSN: 0028-8306,1175-8791
DOI: 10.1080/00288306.1961.10423135