Heat-flow data in the Four Corners area suggest Neogene crustal warming resulting from partial lithosphere replacement in the Colorado Plateau interior, southwest USA

2014 ◽  
Vol 126 (7-8) ◽  
pp. 1084-1092 ◽  
Author(s):  
M. Reiter
Keyword(s):  
Heat Flow ◽  
Colorado Plateau ◽  
Flow Data ◽  
Four Corners ◽  
Southwest Usa

scholarly journals Heat Flow Data in an Area of the Eastern Southern Basin and Range in Arizona Contribute to an Analysis of Neogene Lithosphere Thinning Greater than 100 Km

Lithosphere ◽  
2020 ◽  
Vol 2020 (1) ◽  
pp. 1-9
Author(s):  
Marshall Reiter
Keyword(s):  
Heat Flow ◽  
Colorado Plateau ◽  
Basin And Range ◽  
Mantle Lithosphere ◽  
Flow Data ◽  
Southern Basin ◽  
Vertical Advection ◽  
Lithosphere Thinning ◽  
Tectonic Development ◽  
Paleotemperature Gradient

Abstract Heat flow data and thermochronologic derived paleotemperature gradient data are examined to calculate heat flow ~25 Ma and, at present, for a southern Basin and Range location north of Tucson, Arizona. An increase in the surface heat flow is estimated from ~25 Ma to the present; changing from ~47 to ~83 mW m-2. Steady-state conduction temperature vs. depth profiles provide estimates of lithosphere thicknesses both for the present and for ~25 Ma. Different heat transfer models for present heat flow predict present LAB depth that agrees with seismic studies. From these temperature profiles, lithosphere thinning from ~184 km to ~70 km is suggested during the Neogene. Mantle lithosphere thinning caused by thermal phenomena is likely a fundamental driving force for southern Basin and Range extension. Because the mantle lithosphere has likely thinned much more than the crust, it is shown that additional vertical advection, such as an asthenosphere plume, delaminating part of the mantle lithosphere, convection cells, and rising magmas along conduits, add to the vertical advection component of upper mantle lithosphere extension. Interestingly, values of heat flow 25 Ma, lithosphere thicknesses 25 Ma, and Neogene lithosphere thinning are somewhat similar for the Four Corners area of the Colorado Plateau and the southern Basin and Range, even though Neogene tectonic development was quite different, i.e., no Neogene extension in the Colorado Plateau vs. ~57% in the southern Basin and Range. Neogene lithosphere thinning phenomena are likely different in the two regions.

Thermal evolution of the Sierra Nevada: Tectonic implications of new heat flow data

Tectonics ◽  
1991 ◽  
Vol 10 (2) ◽  
pp. 325-344 ◽  
Author(s):  
Richard W. Saltus ◽  
Arthur H. Lachenbruch
Keyword(s):  
Heat Flow ◽  
Sierra Nevada ◽  
Thermal Evolution ◽  
Flow Data ◽  
Tectonic Implications

scholarly journals A new database structure for the IHFC Global Heat Flow Database

2021 ◽  
Vol 4 (1) ◽  
pp. 1-14
Author(s):  
Sven Fuchs ◽  
Graeme Beardsmore ◽  
Paolo Chiozzi ◽  
Orlando Miguel Espinoza-Ojeda ◽  
Gianluca Gola ◽  
...  
Keyword(s):  
Heat Flow ◽  
International Association ◽  
Open Data ◽  
Flow Data ◽  
Ocean Drilling Program ◽  
Data Set ◽  
Data Services ◽  
External Data ◽  
Database Structure ◽  
Starting Point

Periodic revisions of the Global Heat Flow Database (GHFD) take place under the auspices of the International Heat Flow Commission (IHFC) of the International Association of Seismology and Physics of the Earth's Interior (IASPEI). A growing number of heat-flow values, advances in scientific methods, digitization, and improvements in database technologies all warrant a revision of the structure of the GHFD that was last amended in 1976. We present a new structure for the GHFD, which will provide a basis for a reassessment and revision of the existing global heat-flow data set. The database fields within the new structure are described in detail to ensure a common understanding of the respective database entries. The new structure of the database takes advantage of today's possibilities for data management. It supports FAIR and open data principles, including interoperability with external data services, and links to DOI and IGSN numbers and other data resources (e.g., world geological map, world stratigraphic system, and International Ocean Drilling Program data). Aligned with this publication, a restructured version of the existing database is published, which provides a starting point for the upcoming collaborative process of data screening, quality control and revision. In parallel, the IHFC will work on criteria for a new quality scheme that will allow future users of the database to evaluate the quality of the collated heat-flow data based on specific criteria.

Sign in / Sign up

Export Citation Format

Share Document