This earthcache is along a section of the Australia's Great Dividing Range. The sedimentary rock cover of the continents of the Earth's crust is extensive, but the total contribution of sedimentary rocks is estimated to be only 8% of the total volume of the crust. Sedimentary rocks are only a thin veneer over a crust consisting mainly of igneous and metamorphic rocks. Sedimentary rocks are deposited in layers as strata, forming a structure called bedding. The study of sedimentary rocks and rock strata provides information about the subsurface that is useful for civil engineering, for example in the construction of roads, houses, tunnels, canals or other structures. Sedimentary rocks are also important sources of natural resources like coal, fossil fuels, drinking water or ores.
The study of the sequence of sedimentary rock strata is the main source for scientific knowledge about the Earth's history, including paleography ,paleoclimatology and the history of life. The scientific discipline that studies the properties and origin of sedimentary rocks is called sedimentology. Sedimentology is part of both geology and physical geography and overlaps partly with other disciplines in the Earth sciences, such as pedology, geomorphology, geochemistry and structural geology.
To answer the questions you will need to stand on the east side of the river and try not to stand on the bridge for safety reason because it is only a road bridge with no pedestrian access. Send your answers to the cache owner to complete the earthcache.
Questions
Q1/ Looking at the riverbed/bank what are the TWO main colours do you see??
Q2/ Now looking at the rock pattern on the riverbed. What is the striped pattern called?The answer to this is in the cache page.
Q3/ Looking south- South east from posted coordinates, How many centimeters thick is the black line just above the water level ??(approximately)
Q4/(Optional) Take a Photo of you/team with GZ in Back ground.