GEOLOG Volume 48 S ummer Ete 20 19 Nu mber Nu mero 2 C o n t d o n p 4 Na t ona l Aw a r ds L oga n M e d a l Cee s va n Sta a l The L o g an M edal the hig h est a ward o f t h e Geo l o g ical Ass o ciat o n o f C an ad a is presen te d t o an in d ividu al fo r sus tain ed di s tn g u ish ed achi ev e m ent in Canad ian e arth sc i ence The m edal is aw ard ed t o C e e s v a n S ta a l f o r a chi ev i n g u n p r ece d en t ed reso lu t o n in o r o g eni c anal y sis t h r o u g h integr a te d structur al s tratg rap h ic an d m e tam o rp h ic ge o l o g y m af c an d fe lsi c r o ck g eo chem is try hig h p recisio n g eo chr o n o l o g y se is m ic so u n d in g and c o m p ari s o n with act v e Cir cum P aci f c t ect o n ics as app li ed t o the Canad ian Ap p ala chi an o ro g en and its ex te n si o n s Ci t a t o n R o o t e d i n 3 6 y e a r s o f g e o l o g i c a l m a p p i n g in t h e Ap p ala chi an s o f N e w Brun swick and N ew fo u n d lan d Ce es v an St aal has raised the spa ta l an d t e m p o ral re s o lu ton o f t e ct o n ic ana lysi s to a le v el t h a t is un p rec ede n te d in o r o g eni c belts o f co m p arab le c o m p lexi ty re g ard less o f age H is pl a te te ct o n ic hi st o r y is a t e m p la te app li ed in t h e US Ap p ala chi an s and t h e Ir ish Bri tsh Caledo n id e s It was d e v el o p ed thr o u g h lo n g stan d in g co ll ab o ra t v e in te g rat o n o f m icr o m acr o and m ap scale structur al an al y sis v o l can ic and gra n ite g e o chem is try m et a m o rp h ic t h erm o b aro m et ry hig h p recisio n g eo chr o n o l o g y a n d c o m p ari so n with actve t ec to n ic s in the w est ern Cir cum P aci f c Raised in t h e rich t r ad it o n s o f s tructur al g eo l o g y an d geo p h y sic s at t h e Fr ee Un ive rsit y in Amst erda m Ce es f o ll o we d P au l Will ia m s to New Bru n swick f o r hi s P h D a s tructur al an aly sis o f t h e gi an t Bru n s wick d epo sit that pred ic te d o reb o d y ge o m e try J o in in g t h e GS C in 1 9 8 5 Ce es ex te n d ed his m ap p in g in the Bat h u rst area w h er e h e d o cu m ent ed a plu n g in g re fo ld ed na p p e c o m p l ex co n tain in g t h e o n l y k n o wn b lu esc h ist belt in the n o rthern Ap p ala chi an s an d w ith in w h ich ba ckarc v o lc an ics ar e thru st b eneat h dive rse arc related rock s Ce es in t erp ret ed the na p p e co m p le x as th e f o o r o f an Ord o v icia n m ar g in al sea o f the le ad in g edg e o f G o n d wana d eriv ed Gand eria which co ll ap sed du rin g Sil u ria n ac creto n a t th e act v e m arg in o f great er L au rent a In 1 9 9 1 Ce e s bega n m ap p i n g t h e lar g el y un kno wn so u th c o ast o f c entr al N ew fo u n d lan d With p et ro l o g ist J o e Whal en h e d o cum ented islan d arc accret o n slab brea ko f su b d u cto n f ip and arc rev er sal o n t h e Gan d erian m arg in pri o r t o m arg in al sea o p eni n g and o n the L a u rent an m arg in pri o r t o Gan d erias arri v al His f o u r arc m o d el w as app li ed Medals and A w ar ds