Geologic record

The geologic record in stratigraphy, paleontology and other natural sciences refers to the entirety of the layers of rock strata — deposits laid down by volcanism or by deposition of sediment derived from weathering detritus (clays, sands etc.) including all its fossil content and the information it yields about the history of the Earth: its past climate, geography, geology and the evolution of life on its surface. According to the law of superposition, sedimentary and volcanic rock layers are deposited on top of each other. They harden over time to become a solidified (competent) rock column, that may be intruded by igneous rocks and disrupted by tectonic events.

Correlating the rock record

At a certain locality on the Earth's surface, the rock column provides a cross section of the natural history in the area during the time covered by the age of the rocks. This is sometimes called the rock history and gives a window into the natural history of the location that spans many geological time units such as ages, epochs, or in some cases even multiple major geologic periods—for the particular geographic region or regions. The geologic record is in no one place entirely complete for where geologic forces one age provide a low-lying region accumulating deposits much like a layer cake, in the next may have uplifted the region, and the same area is instead one that is weathering and being torn down by chemistry, wind, temperature, and water. This is to say that in a given location, the geologic record can be and is quite often interrupted as the ancient local environment was converted by geological forces into new landforms and features. Sediment core data at the mouths of large riverine drainage basins, some of which go 7 miles (11 km) deep thoroughly support the law of superposition.

Rock Records

Rock Records(滾石唱片) is a Taiwanese record label founded in 1980 by Sam and Johnny Duan (段鍾沂). The record label had their first multiseller in 1989 with Sarah Chen.

It is now Asia's largest independent record label.

Besides Taiwan and Hong Kong, the record label has offices in Japan, Singapore, Malaysia (acquired SCS in 1995 (Suara Cipta Sempurna, founded in the 1980s)), South Korea and the Philippines.

Distributors

Artists

Former artists

Progressive rock

Progressive rock, also known as prog rock or prog, is a rock music subgenre that originated in the United Kingdom with further developments in Germany, Italy, and France, throughout the mid-to-late 1960s and 1970s. It developed from psychedelic rock, and originated as an attempt to give greater artistic weight and credibility to rock music. Bands abandoned the short pop single in favor of instrumentation and compositional techniques more frequently associated with jazz or classical music in an effort to give rock music the same level of musical sophistication and critical respect.

Progressive rock sometimes abandons the danceable beat that defines earlier rock styles and is more likely to experiment with compositional structure, instrumentation, harmony, rhythm, and lyrical content. It may demand more effort on the part of the listener than other types of music. Musicians in progressive rock typically display a high degree of instrumental skill.Musical forms are blurred through the use of extended sections and of musical interludes that bridge separate sections, which results in classical-style suites. Early progressive rock groups expanded the timbral palette of the then-traditional rock instrumentation by adding instruments more typical of folk, jazz, or music in the classical tradition. A number of bands, especially at the genre's onset, recorded albums in which they performed with full orchestras. Progressive rock artists are more likely to explore complex time signatures such as 5/8 and 7/8.Tempo, key, and time signature changes are common within progressive rock compositions.