walther formulated the principles describing the layers of sedimentary rocks.
walther formulated the principles describing the layers of sedimentary rocks.
who formulated the principles describing the layers of sedimentary rocks?
walther
Na
Na
sedimentary rocks cover around 15% of hong kong land surface. they are formed by deposition of sediments such as sand, mud, skeletons of marine species and pebbles, etc. as more and more sediments were deposited in layers, older layers are compressed by weight of younger layers above, eventually hardened and become sedimentary rocks. undeformed sedimentary rocks always form horizontal layers. however, if deformed, sedimentary rocks can form deformation structures such as folds that record tectonic activities. fossils are often better preserved in sedimentary rocks.
geology of hong kong