Is the Solar System's Galactic Motion Imprinted in the Phanerozoic Climate?

Abstract

A new δ18O Phanerozoic database, based on 24,000 low-Mg calcitic fossil shells, yields a prominent 32 Ma oscillation with a secondary 175 Ma frequency modulation. The periodicities and phases of these oscillations are consistent with parameters postulated for the vertical motion of the solar system across the galactic plane, modulated by the radial epicyclic motion. We propose therefore that the galactic motion left an imprint on the terrestrial climate record. Based on its vertical motion, the effective average galactic density encountered by the solar system is . This suggests the presence of a disk dark matter component.

Diagenetic alteration in low-Mg calcite from macrofossils: a review

“…Sub se quently, pub li ca tions on palaeothermometry and ad vances in an a lyt i cal rou tines Ep stein et al, 1951Ep stein et al, , 1953Craig, 1957) es tab lished the use of cal cite macrofossils as a highly impor tant car rier of in for ma tion for un der stand ing Pa leo zoic and Me so zoic cli mate (Bowen, 1961a, b;Fritz, 1964;Longinelli, 1969;Stahl and Jor dan, 1969;Tan et al, 1970;Jor dan and Stahl, 1970;Tan and Hud son, 1974;Veizer and Fritz, 1976;Buchardt, 1978;Jones et al, 1994;Veizer et al, 1999;Steuber and Veizer, 2002;Prokoph et al, 2008). Re fine ment of tra ditional geo chem i cal prox ies and fron tier work on new palaeoenvironmental tools en sures con tin ued use of macrofossil calcite for re con struct ing sea wa ter chem is try and en vi ron men tal changes in the past (e.g., Finnegan et al, 2011;Korte and Hesselbo, 2011;Blättler et al, 2012;Wierzbowski et al, 2012;Price and Passey, 2013;Schobben et al, 2014;Shaviv et al, 2014;Ullmann et al, 2014a). The large size of macrofossils com bined with the pres ence of growth lines also makes them a good tar get for ad dress ing past sea sonal changes in en vi ron men tal pa ram e ters and en ables de lin ea tion of spe cies-spe cific geo chem i cal char ac ter is tics (e.g., Steuber et al, 2005;Freitas et al, 2006Freitas et al, , 2009Dutton et al, 2007;Ullmann et al, 2010).…”

Cosmic rays, clouds and climate

“…There is actually additional evidence for a link between cosmic rays and climate on time scales not discussed in the article, for example a ~30 Myr oscillation associated with the solar systems movement in and out of the galactic plane as it travel around the galactic center [1,2] and the agreement between cosmic rays and climate can be extended to the whole history of the Earth (the last ~4 billion years) [3]. Although there is a remarkable correlation seen on nearly all time scales, it does not exclude other influences.…”

The Earth’s climate system recurrent & multi-scale lagged responses: empirical law, evidence, consequent solar explanation of recent CO<sub>2</sub> increases & preliminary analysis

“…Firstly, paleoclimate studies have just begun to consider cosmoclimatic approaches that include galactic cosmic rays and cosmic dusts (Shaviv et al, 2014). Secondly, the solar activity, volcanic activity and CO2 forcing of climate at centennial and millennia scales have not been jointly analyzed, neither forecasted, and require further work, with novel methods and updated data.…”