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<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 11 0;"><SPAN>This is a map showing the extent of basement rocks within and adjacent to the MRCI region. Proterozoic (Precambrian) crystalline basement, as well as Paleozoic "basement" east of the Appalachian Mountains, are mapped in at least nineteen terranes and provinces. A table is included to describe ages and general composition. Precambrian rifts and magnetic anomalies are also identified and mapped.</SPAN></P><P><SPAN>Author/Originator: John Hickman, Kentucky Geological Survey</SPAN></P><P><SPAN>Date Created: 2021</SPAN></P><P><SPAN>Map references: </SPAN></P><P><SPAN>Bickford, M.E., Van Schmus, W.R., and Zietz, I., 1986, Proterozoic history of the midcontinent region of North America. Geology, 14(6), pp.492-496.</SPAN></P><P><SPAN>Bickford, M.E., Van Schmus, W.R., Karlstrom, K.E., Mueller, P.A., and Kamenov, G.D., 2015, Mesoproterozoic trans-Laurentian magmatism: A synthesis of continent-wide age distributions, new SIMS U–Pb ages, zircon saturation temperatures, and Hf and Nd isotopic compositions. Precambrian Research, 265, pp.286-312.</SPAN></P><P><SPAN>Duff, P.D., and Kellogg, J.N., 2017, Reinterpretation of Adcoh and Cocorp seismic reflection data with constraints from detailed forward modeling of potential field data — Implications for Laurentia-Peri-Gondwana suture. Tectonophysics, 712, pp.426-437.</SPAN></P><P><SPAN>Hinze, W.J., and Chandler, V.W., 2020, Reviewing the configuration and extent of the Midcontinent rift system. Precambrian Research, 342, pp.1-18.</SPAN></P><P><SPAN>Horton, J.W. Jr, Drake, A.A. Jr, Rankin, D.W., and Dallmeyer, R.D., 1991, Preliminary Tectonostratigraphic Terrane Map of the Central and Southern Appalachians. Reston, VA, USGS Map I-2163, 16p.</SPAN></P><P><SPAN>Lund, K., Box, S.E., Holm-Denoma, C.S., San Juan, C.A., Blakely, R.J., Saltus, R.W., Anderson, E.D., and DeWitt, E.H., 2015, Basement domain map of the conterminous United States and Alaska. U.S. Geological Survey Data Series 898, 41 p., http://dx.doi.org/10.3133/ds898.</SPAN></P><P><SPAN>Mueller, P.A., Heatherington, A.L., Foster, D.A., Thomas, W.A., and Wooden, J.L., 2014, The Suwannee suture: Significance for Gondwana-Laurentia terrane transfer and formation of Pangaea. Gondwana Research, 26, pp.365-373.</SPAN></P><P><SPAN>Rivers, T., 2011, Upper-crustal orogenic lid and mid-crustal core complexes: Signature of a collapsed orogenic plateau in the hinterland of the Grenville Province. Canadian Journal of Earth Sciences, 49(1), pp.1-42.</SPAN></P><P><SPAN>Schulz, K.J., and Cannon, W.F., 2007, The Penokean orogeny in the Lake Superior region. Precambrian Research, 157, pp.4-25.</SPAN></P><P><SPAN>Thomas, W.A., Gehrels, G.E., Lawton, T.F., Satterfield, J.I., Romero, M.C. and Sundell, K.E., 2019, Detrital zircons and sediment dispersal from the Coahuila terrane of northern Mexico into the Marathon foreland of the southern Midcontinent. Geosphere, 15(4), pp.1102-1127.</SPAN></P><P><SPAN>White, C.E., Barr, S.M., and Linnemann, U., 2018, U–Pb (zircon) ages and provenance of the White Rock Formation of the Rockville Notch Group, Meguma terrane, Nova Scotia, Canada: evidence for the “Sardian gap” and West African origin. Canandian Journal of Earth Sciences, 55, pp.589–603.</SPAN></P><P><SPAN>Whitmeyer, S.J. and Karlstrom, K.E., 2007, Tectonic model for the Proterozoic growth of North America. Geosphere, 3(4), pp.220-259.</SPAN></P><P><SPAN>Willner, A.P., Gerdes, A., Massonne, H-J., van Staal, C.R., and Zagorevski, A., 2014, Crustal Evolution of the Northeast Laurentian Margin and the Peri-Gondwanan Microcontinent Ganderia prior to and during closure of the Iapetus Ocean: Detrital Zircon U–Pb and Hf Isotope Evidence from Newfoundland. Geoscience Canada, 41, pp.345-364.</SPAN></P></DIV></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>This product of the Midwest Regional Carbon Initiative (MRCI) is intended to provide general geologic information only and should not be used for any other purpose. It is not intended for resale or to replace site-specific investigations. These data were compiled by MRCI, which reserves the publication rights to this material. If these data are used in the compilation of other data sets or maps for distribution or publication, this source must be referenced.</SPAN></SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>The information contained herein may be updated or edited in the future. Future releases of this material, if altered, will display a revision date. Users should check to ensure they have the latest version and reference the appropriate revision date if it is being used in other works. </SPAN></SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN>This material was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government, nor any agency thereof, nor any of their employees, nor Battelle, nor any member of the MRCI makes any warranty, express or implied, or assumes any liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendations, or favoring by Battelle, members of the MRCI, the United States Government or any agency thereof. The views and the opinions of authors expressed herein do not necessarily state or reflect those of the members of the MRCI, the United States Government or any agency thereof.</SPAN></P></DIV></DIV></DIV> |