▁– ▁viol in ▁on ▁" For ▁You " ▁ ▁Production ▁ ▁Lar issa ▁Collins ▁– ▁package ▁design ▁Chris ▁D unn ▁– ▁A & R ▁Joe ▁Fer la ▁– ▁Audio ▁engineer , ▁recording ▁assistant ▁James ▁Fra ze e ▁– ▁assistant ▁engineer ▁Mark ▁W ilder ▁– ▁master ing ▁ ▁Ch arts ▁ ▁References ▁ ▁Category : 2 0 0 9 ▁albums ▁Category : Ste fon ▁Harris ▁albums ▁Category : Con cord ▁Records ▁albums <0x0A> </s> ▁Mark er ▁hor iz ons ▁or ▁chron oh or iz ons ▁or ▁marker ▁b eds ▁are ▁strat ig raph ic ▁units ▁of ▁the ▁same ▁age ▁and ▁of ▁such ▁distinct ive ▁composition ▁and ▁appearance , ▁that , ▁despite ▁their ▁presence ▁in ▁separate ▁ge ographic ▁locations , ▁there ▁is ▁no ▁doubt ▁about ▁their ▁being ▁of ▁equivalent ▁age ▁( is och ron ous ) ▁and ▁of ▁common ▁origin . ▁Such ▁clear ▁markers ▁facil itate ▁the ▁correlation ▁of ▁str ata , ▁and ▁used ▁in ▁conj unction ▁with ▁foss il ▁fl oral ▁and ▁fa unal ▁ass embl ages ▁and ▁pale om agnet ism , ▁permit ▁the ▁mapping ▁of ▁land ▁masses ▁and ▁bodies ▁of ▁water ▁throughout ▁the ▁history ▁of ▁the ▁earth . ▁ ▁Pal yn ology , ▁the ▁study ▁of ▁foss il ▁poll ens ▁and ▁sp ores , ▁rout in ely ▁works ▁out ▁the ▁strat ig raph y ▁of ▁rocks ▁by ▁comparing ▁pol len ▁and ▁sp ore ▁ass embl ages ▁with ▁those ▁of ▁well - known ▁layers — a ▁tool ▁frequently ▁used ▁by ▁pet role um ▁expl oration ▁companies ▁in ▁the ▁search ▁for ▁new ▁fields .