Dear Sara Nice to hear from you. I saw your good paper with Prof. Bergrat in JSG. Hearty congratulations! I submitted a paper to JSG wherein we calculated P-T conditions, depth of overburden etc by assuming a geothermal gradient of 35 centigrade per km for the 1000 Ma year old Proterozoic rift valley sediments. The paper has come back for revision and one of the questions that I have to answer is the justification of using this geothermal gradient. How are Parick and family? My daughter is 15 years and son is 11 years now. No wonder I have become very old. With best regards Deepak ----- Original Message ----- From: Sara VANDYCKE To: [log in to unmask] Sent: Tuesday, June 18, 2002 2:35 PM Subject: Re: Request for help Hello Deepack, Of course, I have no answers but it is a chance to say just hello. How are you ? Still geologist .. Best wishes Sara Vandycke -----Message d'origine----- De : Dr D.C.Srivastva [mailto:[log in to unmask]] Envoyé : mardi 18 juin 2002 7:00 À : [log in to unmask] Objet : Request for help Dear All, Could you please suggest the value of plaeo-geothermal gradient for the Proterozoic rift valley sediments (1000 Ma.) with thin layers of andesite and mafic lavas at the base? Thanking you in anticipation, Deepak