نتایج جستجو برای: surficial geology

تعداد نتایج: 11614  

2006
Jim E. O'Connor Gordon E. Grant Tana L. Haluska

Within the Deschutes River basin of central Oregon, the geology, hydrology, and physiography influence geomoqhic and ecologic processes at a variety of temporal and spatial scales. Hydrologic and physiographic characteristics of the basin are related to underlying geologic materials. In the southwestern part of the basin, Quaternary volcanism and tectonism has created basin fills and covered an...

Journal: :Canadian Journal of Earth Sciences 2022

Seasonal or degradational thaw subsidence of permafrost terrain affects the landscape, hydrology, and sustainability as an engineering substrate. We perform sensitivity prediction via supervised classification a feature set consisting geological, topographic, multispectral variables over continuous near Rankin Inlet, Nunavut, Canada. build reference using process-based categorization seasonal m...

2014
Jeffrey L. Howard

A preliminary 1:24,000 scale surficial geologic map of the Detroit 7.5 minute topographic quadrangle, and surrounding areas, was produced to serve as a framework for future urban site assessment. The results show that the map area is a relict late Pleistocene glacial landscape on which is superimposed a Holocene system of streams, lakes and wetlands, and an Anthropocene landscape of manufacture...

Journal: Geopersia 2017

Some 43 samples collected from surficial sediments of Semnan Province (Alborz zone) and NE Isfahan Province (Central Iran zone) were analyzed, for constrains on provenance. Sand fraction were analyzed by XRF analyzer Philips Model PW 2450 in the laboratory of the Geology Survey Iran (GSI). Precision was 0.01%. Furthermore, 8 selected sediment samples and 8 samples from rock units from surroundi...

Journal: :The Science of the total environment 2014
Todd M Preston Tara L Chesley-Preston Joanna N Thamke

Water (brine) co-produced with oil in the Williston Basin is some of the most saline in the nation. The Prairie Pothole Region (PPR), characterized by glacial sediments and numerous wetlands, covers the northern and eastern portion of the Williston Basin. Sheridan County, Montana, lies within the PPR and has a documented history of brine contamination. Surface water and shallow groundwater in t...

Journal: :Journal of environmental monitoring : JEM 2012
Lijia Yang Xiqing Li Pengfei Zhang Michael E Melcer Youxian Wu Urs Jans

The concentrations of three frequently detected organochlorine pesticides (OCPs) and one degradation product, p,p'-DDT, p,p'-DDD, dieldrin, and p,p'-DDE were determined in recently collected (2005-2006) and archived (1986-1989) surficial sediments and sediment cores from Long Island Sound (LIS). The concentration of dieldrin ranged from 0.05 to 5.27 ng g(-1) dry weight in the surficial sediment...

Journal: :Journal of Maps 2021

This study presents a 1:25,000 geomorphological map of the northern sector Ulu Peninsula, James Ross Island, Antarctic Peninsula. The covers an area c. 250 km2, and documents landforms surficial sediments one largest ice-free areas in Antarctica, based on remote sensing field-based mapping. large-scale landscape features are determined by underlying Cretaceous sedimentary Neogene volcanic geolo...

Journal: :Remote Sensing 2021

In the northeastern United States, widespread deforestation occurred during 17–19th centuries as a result of Euro-American agricultural activity. late 19th and early 20th centuries, much this landscape was reforested region experienced industrialization farmland became abandoned. Many previous studies have addressed these changes, but primary method for estimating amount distribution cleared fo...

Journal: :Regional geology reviews 2022

Abstract This chapter represents a comprehensive review of Kuwait’s surface geology and stratigraphy from previous works accomplished by numerous geoscience researchers in the past decades. The Kuwait is characterized nearly flat topography, featureless to gently undulating, apart few tens meters escarpments north south, low moderately elevated hills ridges. It predominantly consists siliciclas...

2007
MATTHEW E. POACH

Wind-driven surficial oxygen transfer into stationary water bodies has become increasingly important because the fate of many pollutants in these water bodies is strongly influenced by oxygen mass transfer. There are many existing correlations that can be used for predicting wind-driven surficial oxygen transfer; however, the actual prediction has been difficult because there are large variatio...

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