原来
发表于 2025-3-26 23:07:09
Aerial Photographs and Maps,Aerial photographs have always been an essential aid to fieldwork, as a device for locating features and routes to get to the features of interest; in addition, many maps have been prepared by transferring information from transparent overlays onto base topographic maps. The variety of maps used by
忧伤
发表于 2025-3-27 02:20:03
http://reply.papertrans.cn/16/1567/156656/156656_32.png
adj忧郁的
发表于 2025-3-27 06:57:19
Sampling,d to show the lateral and/or vertical variation within the units; (2) for detailed laboratory analysis (e.g., for pollen and microfossil identifications, for textural or compositional study, or for geochemical analysis). Sampling occupies a key position in any sedimentological investigation because
甜瓜
发表于 2025-3-27 12:50:15
Sample Treatment in the Laboratory,nformation required from subsequent laboratory studies. Because the sample treatments required depend on the type of analytical work planned, it is important to consider what analytical work is necessary before deciding how to treat the samples. A flowchart showing some of the alternative analytical
GRAIN
发表于 2025-3-27 16:19:38
Analysis of Sedimentary Structures,nd where a compass and clinometer are utilized to quantitatively measure the three-dimensional attitude of the elements composing the structures (see Chapter 3 and . Chapter 4). Devices such as the disk shown in Fig. 6–1 can prove convenient in the field for measuring the strike and dip of cross-bed
FRONT
发表于 2025-3-27 18:01:03
http://reply.papertrans.cn/16/1567/156656/156656_36.png
aphasia
发表于 2025-3-27 22:33:58
http://reply.papertrans.cn/16/1567/156656/156656_37.png
endocardium
发表于 2025-3-28 03:52:09
http://reply.papertrans.cn/16/1567/156656/156656_38.png
吞吞吐吐
发表于 2025-3-28 07:54:54
http://reply.papertrans.cn/16/1567/156656/156656_39.png
Invigorate
发表于 2025-3-28 12:42:42
http://reply.papertrans.cn/16/1567/156656/156656_40.png