WebAug 1, 2005 · The overlying fine-grained diamicts and silty clays record flooding of the valley and deposition under glaciolacustrine or subglacial conditions. The widespread extent of these fine-grained deposits suggests that the valley was flooded by water many tens of meters above pres ent day lake levels. This may have been caused either by local … WebJan 3, 2024 · Low-angle faults, together with slickensides and attenuated diamicts adjacent to the faults, show that the glacimarine sediment has been entrained as a series of blocks with an average thickness of about 0.5 m (Fig. 5.10). The moraines have accumulated as successively older glacimarine sediments were eroded from the floor of the fjord and then ...
Frontiers Comment to: Detecting upland glaciation in Earth’s pre ...
WebThis is important because "glacial" diamicts may have a variety of origins only some of which are true tills. Fig. 1 Exposures at Ranco Quarry This approach from student work at Ranco Quarry (Manorville) represents a window into the Ronkonkoma Moraine. A composite measured-sections about 20 m thick comprises in ascending order a predominantly ... WebApr 10, 2024 · In this study, we investigate whether crosshole GPR can provide information on the structural relationship of diamicts and their material properties, such as water content, bulk density, and clay content. To achieve ground truth, we compare the crosshole GPR data with geological information from boreholes and an excavation at the field site. crystal\\u0027s nk
" Studying Exposed Sections on Long Island: - Stony Brook University
WebApr 12, 2024 · Comment to: Soreghan et al. (2024), Detecting upland glaciation in Earth’s pre-Pleistocene record.IntroductionSoreghan et al. (2024) conducted field research to find evidence of ancient upland glaciation “in the absence or near-absence of icecontact indicators”, and as an example they presented a case study mainly from the Late … WebApr 8, 2014 · This novel method has solved most of the earlier problems of interpretation of surface microtextures, and it is easy to use and to quickly find evident genetic … Webof glacial diamicts is a formidable challenge. Many kilometers of ice may, before melting, shear past a point very near the front of the moraine, leaving no further trace. An indeterminate amount of that shear may occur in the ice, as opposed to the sediments. For these reasons, absolute strain levels may not be recorded clearly in sediments. crystal\u0027s ng