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Timeline of the development of tectonophysics (after 1952)

The evolution of tectonophysics is closely linked to the history of the continental drift and plate tectonics hypotheses. The continental drift/ Airy-Heiskanen isostasy hypothesis had many flaws and scarce data. The fixist/ Pratt-Hayford isostasy, the contracting Earth and the expanding Earth concepts had many flaws as well.

The idea of continents with a permanent location, the geosyncline theory, the Pratt-Hayford isostasy, the extrapolation of the age of the Earth by Lord Kelvin as a black body cooling down, the contracting Earth, the Earth as a solid and crystalline body, is one school of thought. A lithosphere creeping over the asthenosphere is a logical consequence of an Earth with internal heat by radioactivity decay, the Airy-Heiskanen isostasy, thrust faults and Niskanen's mantle viscosity determinations.

Making sense of the puzzle pieces

Map of the later North Atlantic region after the closing of the Iapetus Ocean and the Caledonian/Acadian orogenies (Wilson 1966). Animals: Trilobites and graptolites.[1][2]
Euramerica in the Devonian (416 to 359 Ma) with Baltica, Avalonia (Cabot Fault, Newfoundland and Great Glen Fault, Scotland; cited in Wilson 1962) and Laurentia (Other parts: Iberian Massif and Armorican terrane).

Plate tectonics

The "Bullard's Fit" of the Iapetus Ocean suture zone.
Approximate location of Mesoproterozoic (older than 1.3 Ga) cratons in South America and Africa. The São Luís and the Luis Alves cratonic fragments are shown (Brazil), but the Arequipa–Antofalla craton, the Saharan Metacraton and some minor African cratons are not. Other versions describe the Guiana Shield separated from the Amazonian shield by a depression.

Geodynamics

Euler rotational pole.
Spreading at a mid-ocean ridge (the image has a flaw though, the seafloor gets thicker with age).
     Approximate world distribution of living Cycadales
A distribution map of Gnetophyta colour-coded by genus:
Green – Welwitschia
Blue – Gnetum
Red – Ephedra
Purple – Gnetum and Ephedra range overlap

Overview

Many concepts had to be changed:

The shifting and evolution of knowledge and concepts, were from:

Profile of the East Swiss Alps (1880, from Northeast to Southwest) by Albert Heim, before he accepted the theory of thrusting. Key: #a Gneiss, schist and so on, #b Jura, #c Cretaceous and #d Eocene; Walensee, Schaechental, Windgaelle and Finsteraarhorn.

Actually, there were two main "schools of thought" that pushed plate tectonics forward:

Wegener's continental drift hypotheses is a logical consequence of: the theory of thrusting (alpine geology), the isostasy, the continents forms resulting from the supercontinent Gondwana break up, the past and present-day life forms on both sides of the Gondwana continent margins, and the Permo-Carboniferous moraine deposits in South Gondwana.

Graphics

Plate tectonics map, Digital Tectonic Activity Map[14]
Global plate tectonic movement[15]

See also

References

Notes

  1. ^ Windley 1996.
  2. ^ Ziegler 1990.
  3. ^ Hurley et al. 1966.
  4. ^ Hurley et al. 1967.
  5. ^ McPhee 1998.
  6. ^ Bill Bonini; Laurie Wanat, eds. (Fall 2003). "Jason Morgan Retires" (PDF). The Smilodon: The Princeton Geosciences Newsletter. 44 (2). Fortuitously, he was assigned as well an office that he shared for two years with Fred Vine,... This insight was fundamental to the revolutionary theory then developing, and sharing that office with Fred Vine drew Morgan into the subject — as he puts it — "with a bang." A paper written by H.W. Menard caused him to begin musing on his own about great faults and fracture zones, and how they might relate to theorems on the geometry of spheres Passages about W. Jason Morgan from McPhee, John (1998) Annals of the Former World, New York: Farrar, Straus, Giroux.
  7. ^ Poinar GO, Danforth BN (October 2006). "A fossil bee from Early Cretaceous Burmese amber" (PDF). Science. 314 (5799): 614. CiteSeerX 10.1.1.627.551. doi:10.1126/science.1134103. PMID 17068254. S2CID 28047407. Archived from the original (PDF) on 2012-12-04.
  8. ^ Dave Mosher (December 26, 2007). "Modern beetles predate dinosaurs". Live Science. Retrieved June 24, 2010.
  9. ^ Wiegmann, Brian M.; Trautwein, Michelle D.; Winkler, Isaac S.; Barr, Norman B.; Kim, Jung-Wook; Lambkin, Christine; Bertone, Matthew A.; Cassel; Bayless, Brian K.; Heimberg, Alysha M.; Wheeler, Benjamin M.; Peterson, Kevin J.; Pape, Thomas; Sinclair, Bradley J.; Skevington, Jeffrey H.; Blagoderov, Vladimir; Caravas, Jason; Kutty, Sujatha Narayanan; Schmidt-Ott, Urs; Kampmeier, Gail E.; Thompson, F. Christian; Grimaldi, David A.; Beckenbach, Andrew T.; Courtney, Gregory W.; Friedrich, Markus; Meier, Rudolf; Yeates, David K. (2011). "Episodic radiations in the fly tree of life". Proceedings of the National Academy of Sciences. 108 (14): 5690–5695. Bibcode:2011PNAS..108.5690W. doi:10.1073/pnas.1012675108. PMC 3078341. PMID 21402926.
  10. ^ Araki et al. 2005.
  11. ^ Scotese, Christopher. "The Paleomap Project".
  12. ^ a b "Center for Geodynamics, Geological Survey of Norway".
  13. ^ a b "EarthByte Group, University of Sydney". Archived from the original on 2012-06-28.
  14. ^ The Digital Tectonic Activity Map (DTAM) was produced by Paul Lowman and colleagues at NASA GSFC, 1998.
  15. ^ NASA/JPL Archived 2011-07-21 at the Wayback Machine, courtesy of Michael B. Heflin, 2007.9. See Bird (2003) and Dr. Ron Blakey Archived 2012-08-07 at the Wayback Machine, Northern Arizona University.

Cited books

Cited articles

Further reading