The Proceedings of the Eighth International Conference on Creationism (2018)
- expected erosional action of Day Two water movement on rocks formed on Day One. Early Paleoproterozoic gold-uranium conglomerates of Canada (Pirajno 1992), are inferred to have resulted from great tectonic upheavals of Day Two. The intrusion of radioactive pegmatites in the Trans-Hudson Province of northern Saskatchewan is described as being associated with high temperature hydrous melts during peak and late-metamorphic events and deformation-induced rapid melting of the Hudsonian Event (McKeogh et al. 2013; Stockwell 1964). Volatile saturation and metasomatic interaction with host rocks during ascent and emplacement of pegmatite is indicated by field relationships, mineralogical and textural evidence (McKeogh et al. 2013). Steep pegmatite structures in fractures would have enabled rapid heat loss and crystallization of the pegmatite (McKeogh et al. 2013; Snelling 2008). It is proposed that Day Two fluid flow processes be correlated with the development of northern Paleoproterozoic provinces along with NorthAmerica’s Hudsonian Event (Fig. 2). 4. Southeastern Proterozoic provinces history A. Huge crustal growth and high mountain building And God said, “Let the waters under the heavens be gathered together into one place, and let the dry land appear.” And it was so. God called the dry land Earth, and the waters that were gathered together he called Seas . And God saw that it was good (Genesis 1:9-10 ESV). The northeast-trending Yavapai, Matzatzal and Grenville provinces are considered to represent episodes of huge continental (granitoid) growth and crustal thickening as part a great accretionary orogen (Condie et al. 2009; Spencer et al. 2015; Van Kranendonk and Kirkland 2013). The Grenvillian Event has been described as an orogeny, with the Grenville Province as the type region (Stockwell et al. 1970). The Grenvillian Event was preceded by, and was partly contemporaneous with, extensive rift systems which developed following the Elsonian Event (Fig. 2), which was a phase of dominantly granitoid intrusion (Frazier and Schwimmer 1987; Irving et al. 1976). The western Nain Province of northeast Canada is the type region for the Elsonian Event (Stockwell et al. 1970). Unlike the much larger region of the Grenville Province, the Nain Province was unaffected by later metamorphism (Ashwal 2010) (Fig. 2). During the Grenvillian Event, northwest- directed contraction at the southern margin of North America was accompanied by intracratonic extension and voluminous mafic magmatism including the Midcontinent Rift (Whitmeyer and Karlstrom 2007). The Grenvillian Event has been described as “Perhaps the greatest orogenic event in Earth’s history…” (Rainbird et al. 2012). Huge crustal thickening and mountain building is inferred. The peak in geochemical and isotopic signatures, identified in North America, Western Australia and global data sets, indicates that the Grenvillian Event represents a unique episode in Earth history. Indeed, paleogeographic reconstructions and tectonic analysis reveal that the Grenville orogen was perhaps the longest and widest in Earth history, spanning a quarter of the globe, or a distance of approximately 20,000 km long and as wide as 800 km, including a core zone several hundred kilometers wide (Van Kranendonk and Kirkland 2013). B. Pre-Flood seas, land, and associated mineralisation The Belt-Purcell Basin is of Mesoproterozoic age like the Grenville Province. It is considered to be filled by marine and fluviatile sediments (Lydon 2007) and this may be consistent with formation in a pre-Flood sea created on Day Three. The most favourable environment for the formation of SEDEX deposits, such as that at Sullivan, is believed to be intracratonic rifts that have been filled by marine sediments, with the deposits being spatially associated with synsedimentary faults. (Lydon 2007). Thus, such ore deposits are considered to have formed associated with tectonism as the pre- Flood seas gathered on Day Three. Interaction with anoxic, cool, reduced deep seafloor sediments and more alkaline seawater would have enabled rapid precipitation of base metal sulfides on the pre- Flood seafloor (Dickens and Snelling 2015). And the waters prevailed so mightily on the earth that all the high mountains under the whole heaven were covered . (Genesis 7:19 ESV). Antediluvian high mountains may have been located at the site of Proterozoic belts adjacent to Archean provinces. The rocks of today’s Grenville Province may represent the Flood-eroded roots (Dickens 2017b, Rainbird et al. 2012) of some pre-Flood high mountains (Genesis 7:19) formed on Day Three. The late Paleoproterozoic and Mesoproterozoic is considered to represent a time of growth and huge thickening of continental crust to form high mountains and thus emergent land of a supercontinent. This is prior to the latter part of Day Three when seed-yielding plant life was created. The voluminous granitoid plutonism of overall northeast-trending late Paleoproterozoic provinces (Yavapai and Mazatzal provinces) (Mints 2007; Whitmeyer and Karlstrom 2007) may be associated with an initial thickening of crust. This then is considered to have led to the emergence of land on Day Three, associated with the mountain-building of the Grenvillian Event. Worldwide, the late Paleoproterozoic had the biggest magmatic processes (Salop 1982). It is proposed that formation of late Paleoproterozoic and Mesoproterozoic provinces of the southeast of the North American craton, along with North America’s Grenvillian Event (Fig. 2), be correlated with processes in the earlier part of Day Three. 5. Neoproterozoic sedimentary cover history A. Supercontinent breakup by his knowledge the deeps broke open… (Proverbs 3:20a ESV) In the six hundredth year of Noah’s life, in the second month, on the seventeenth day of the month, on that day all the fountains of the great deep burst forth, and the windows of the heavens were opened. (Genesis 7:11 ESV) ‘Deeps were divided’ and ‘springs of the great deep burst forth’ imply rifting and fracturing of the Earth’s crust. This is inferred to correlate withNeoproterozoic breakup of a supercontinent (Dickens and Snelling 2008). The Pan-African Event is associated with massive Neoproterozoic breakup of a supercontinent, including the Cordilleran and Appalachian margins of North America. In this article the Pan-African Event is inferred to have initiated with the Dickens ◀ North American Precambrian geology ▶ 2018 ICC 397
Made with FlippingBook
RkJQdWJsaXNoZXIy MTM4ODY=