A Global Boundary Stratotype Section and Point (GSSP) is an internationally agreed upon reference point on a stratigraphic section which defines the lower boundary of a stage on the geologic time scale. The effort to define GSSPs is conducted by the International Commission on Stratigraphy, a part of the International Union of Geological Sciences. Most, but not all, GSSPs are based on paleontological changes. Hence GSSPs are usually described in terms of transitions between different faunal stages, though far more faunal stages have been described than GSSPs. The GSSP definition effort commenced in 1977. As of 2023, 79 of the 101 stages that need a GSSP have a ratified GSSP.
The geologic time scale or geological time scale (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy and geochronology. It is used primarily by Earth scientists to describe the timing and relationships of events in geologic history. The time scale has been developed through the study of rock layers and the observation of their relationships and identifying features such as lithologies, paleomagnetic properties, and fossils. The definition of standardised international units of geologic time is the responsibility of the International Commission on Stratigraphy (ICS), a constituent body of the International Union of Geological Sciences (IUGS), whose primary objective is to precisely define global chronostratigraphic units of the International Chronostratigraphic Chart (ICC) that are used to define divisions of geologic time. The chronostratigraphic divisions are in turn used to define geochronologic units.
The American Association of Petroleum Geologists (AAPG) is one of the world's largest professional geological societies with about 17,000 members across 129 countries. The AAPG works to "advance the science of geology, especially as it relates to petroleum, natural gas, other subsurface fluids, and mineral resources; to promote the technology of exploring for, finding, and producing these materials in an economically and environmentally sound manner; and to advance the professional well-being of its members." The AAPG was founded in 1917 and is headquartered in Tulsa, Oklahoma; currently almost one-third of its members live outside the United States.
The International Commission on Stratigraphy (ICS), sometimes unofficially referred to as the "International Stratigraphic Commission", is a daughter or major subcommittee grade scientific daughter organization that concerns itself with stratigraphical, geological, and geochronological matters on a global scale.
The Elster glaciation or, less commonly, the Elsterian glaciation, in the older and popular scientific literature also called the Elster Ice Age (Elster-Eiszeit), is the oldest known ice age that resulted in the large-scale glaciation of North Germany and other parts of Europe. It took place approximately 500,000–400,000 years ago. It succeeded a long period of rather warmer average temperatures, the Cromerian Complex. The Elster was followed by the Holstein interglacial, which was followed Saale glaciation. The glacial period is named after the White Elster, a right tributary of the Saale.
In the stratigraphy sub-discipline of geology, a Global Standard Stratigraphic Age, abbreviated GSSA, is a chronological reference point and criterion in the geologic record used to define the boundaries between different geological periods, epochs or ages on the overall geologic time scale in a chronostratigraphically useful rock layer. A worldwide multidisciplinary effort has been ongoing since 1974 to define such important metrics. The points and strata need be widespread and contain an identifiable sequence of layers or other unambiguous marker attributes.
In the geological timescale, the Berriasian is an age/stage of the Early/Lower Cretaceous. It is the oldest subdivision in the entire Cretaceous. It has been taken to span the time between 145.0 ± 4.0 Ma and 139.8 ± 3.0 Ma. The Berriasian succeeds the Tithonian and precedes the Valanginian.
The United Nations General Assembly declared 2008 as the International Year of Planet Earth to increase awareness of the importance of Earth sciences for the advancement of sustainable development. UNESCO was designated as the lead agency. The Year's activities spanned the three years 2006–2009.
The year 2006 was declared the International Year of Deserts and Desertification by the United Nations General Assembly. The Year aims to raise $20 million from industry and governments and will spend half on co-funding research, and half on "outreach" activities. It will be the biggest ever international effort to promote the Earth sciences. Apart from researchers, who are expected to benefit under the Year's Science Programme, the principal target groups for the Year's broader messages are:
The IAGC is affiliated with the International Union of Geological Sciences and has been one of the pre-eminent international geochemical organizations for over thirty-five years.
The International Geoscience and Geoparks Programme (IGCP) is a cooperative enterprise of UNESCO and the International Union of Geological Sciences (IUGS).
The International Association for Engineering Geology and the Environment, formerly International Association for Engineering Geology, also known as IAEG, is an international scientific society which was founded in 1964. It is affiliated with the International Union of Geological Sciences (IUGS) and has 3,798 members and 59 national groups all over the world.
The Commission for the Management and Application of Geoscience Information (CGI), usually referred to by the unofficial "Commission for Geoscience Information" is subcommittee grade scientific organization that concerns itself with geological standard, information management and interoperability matters on a global scale.
The International Commission on the History of Geological Sciences (INHIGEO) promotes ongoing research into the history of the earth sciences, particularly the history of geology. It has 20 Honorary Senior Members and 301 members (2018) worldwide.
Geoethics is the branch of ethics which relates to the interaction of human activity with our physical world in general, and with the practice of the Earth sciences in particular. It may also have relevance to planetary sciences. It is described as an emerging scientific and philosophical discipline, consisted of research and reflection on the values that serve as the bases of behaviors and practices wherever human activities interact with the Earth system. Moreover, geoethics promotes the ethical and social roles of geoscientists in conducting scientific and technological research and practice.
The Meghalayan age is the name given in 2018, by the International Commission on Stratigraphy, to the current age or latest geologic age – or uppermost stage of the Quaternary. It is also the upper, or latest, of three subdivisions of the Holocene epoch or series. This way of breaking down time is based only on geology; for example, it is unrelated to the three-age system of historical periods into which human development is sometimes divided.
The Anthropocene Working Group (AWG) is an interdisciplinary research group dedicated to the study of the Anthropocene as a geological time unit. It was established in 2009 as part of the Subcommission on Quaternary Stratigraphy (SQS), a constituent body of the International Commission on Stratigraphy (ICS). As of 2021, the research group features 37 members, with the physical geographer Simon Turner as Secretary and the geologist Colin Neil Waters as chair of the group. The late Nobel Prize-winning Paul Crutzen, who popularized the word 'Anthropocene' in 2000, had also been a member of the group until he died on January 28, 2021. The main goal of the AWG is providing scientific evidence robust enough for the Anthropocene to be formally ratified by the International Union of Geological Sciences (IUGS) as an epoch within the Geologic time scale.
Also known as Earth science education, It is the study of Earth's physical features, processes, and systems, as well as the natural and human-induced events that shape it. It encompasses a wide range of disciplines, including geology, oceanography, meteorology, climatology, environmental science, and more. Geoscience education plays a crucial role in fostering scientific literacy, environmental awareness, and sustainable development, as well as in preparing future generations of geoscientists, policymakers, educators, and citizens. It is also a branch of science education.
Barry J. Cooper (1948–2023) was an Australian geologist, professor at the University of South Australia, historian of geology and public figure. President of the International Commission on the History of Geological Sciences (2016-2020).
