Correlation of Stratigraphic Units of North America--COSUNA

Childs, Orlo E.

doi:10.1306/ad461c73-16f7-11d7-8645000102c1865d

Cited by 8 publications

(2 citation statements)

References 6 publications

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“…A recently published, large-to intermediate-scale geologic map or report on the general geology of the area of interest is usually a good place to start. Alternatively, for the U.S., the set of 20 Correlation of Stratigraphic Units of North America (COSUNA) charts (AAPG 1983(AAPG -1986 provides 570 stratigraphic columns throughout the U.S., excluding Hawaii (Childs 1985). For Canada, a similar, but older, set of four correlation charts was published by the Geological Survey of Canada (Douglas 1967, part C).…”

Section: Information Sourcesmentioning

confidence: 99%

How to use stratigraphic terminology in papers, illustrations, and talks

Owen

2009

strat

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Some writers, speakers, and students have problems with clear usage of stratigraphic terminology, a topic made more acute by the appearance of the complex 1983 North American Stratigraphic Code, its 2005 revision, and new editions of the International Stratigraphic Guide. The basic categories of stratigraphic units are: 1) material; 2) non-material; 3) hybrid. Examples are the well-known rock (lithostratigraphic), time (geochronologic), and time-rock (chronostratigraphic) units, respectively. Biostratigraphic units (biozones) are used to describe and correlate time-rock units. Lesser-known categories include magnetostratigraphic, lithodemic, pedostratigraphic, diachronic, and unconformity-related units. Sequence-stratigraphic nomenclature, still developing, is in a state of turmoil at present. Both formal and informal stratigraphic units are recognized. All words in formal units are capitalized, except for species names in biozones. Only the geographically derived name in informal units is generally capitalized. Inadequate distinction between time and place words, both formal and informal, leads to unnecessary confusion. Misuse of early versus lower, late versus upper, and Ma for Myr is epidemic. Web sites and publications such as lexicons, geologic time scales, and correlation charts are recommended as initial sources of stratigraphic information. Naming, revising, and abandoning formal stratigraphic names are governed by specific rules for names to be accepted. In illustrations of stratigraphic units, it is important to distinguish clearly between scales of time and position. Strata are not measured in years, or time in meters!

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Section: Information Sourcesmentioning

confidence: 99%

How to use stratigraphic terminology in papers, illustrations, and talks

Owen

2009

strat

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“…collaboration, geology, macrostratigraphy, rock record, stratigraphy, visualization Despite this flexibility, the current iteration of Macrostrat is primarily a chronostratigraphic project, and most Macrostrat columns are regional-scale records organized in geologic time. Columns and their constituent units are sourced primarily from regionally defined, representative stratigraphic summaries compiled at basin and continental scales (e.g., COSUNA; Childs, 1985). However, more localized scales of data are increasingly being ingested as part of data-assimilation projects (Segessenman, 2020, Section 4.1.2).…”

Section: Introductionmentioning

confidence: 99%

Building a multi‐scale, collaborative, and time‐integrated digital crust: The next stage of the Macrostrat data system

Quinn,

Idzikowski,

Peters

2023

Geoscience Data Journal

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Macrostrat is a platform for deep‐time geoscientific research that integrates stratigraphic columns and geologic maps into a digital description of the crust. The database and supporting software track crustal evolution and provide location‐based geological information to geoscience end users. Macrostrat houses multiple scales of mapping and stratigraphic data, from continent‐ and basin level summaries to single quadrangles and measured sections. Currently, Macrostrat's primary data holdings consist of regional stratigraphic columns with a spatial footprint weighted heavily to North America. While the data are of sufficient scale and resolution to generate insights about Earth evolution, increasing resolution and expanding spatial coverage will allow a new generation of scientific and interpretive uses. The next phase of Macrostrat's development will increase the detail and complexity of Macrostrat's multiscale data holdings, largely by engaging a wider range of geoscientists in entering stratigraphic data. To support broad collaboration, we are building new web‐based software to assemble and visualize regional stratigraphic sequences, refine multiple working age models, and compose regional records from measured stratigraphic sections. These tools will allow Macrostrat to draw on the expertise of a wide range of geoscience workers and grow a dataset with global relevance and a variety of end uses. New capabilities will pave the way to processes for submission, review, coordination, and assimilation of community‐contributed stratigraphic datasets. Digital compilation of geological maps and columns requires substantial effort, and well‐designed systems for distributing this work in the geoscience community will allow Macrostrat to build more adaptable and scientifically relevant products.

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Chemical and isotopic changes in Williston Basin brines during long-term oil production: An example from the Poplar dome, Montana

Peterman

Thamke

2016

Bulletin

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Correlation of Stratigraphic Units of North America--COSUNA

Cited by 8 publications

References 6 publications

How to use stratigraphic terminology in papers, illustrations, and talks

How to use stratigraphic terminology in papers, illustrations, and talks

Building a multi‐scale, collaborative, and time‐integrated digital crust: The next stage of the Macrostrat data system

Chemical and isotopic changes in Williston Basin brines during long-term oil production: An example from the Poplar dome, Montana

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