A LONG STANDING TENET IN GEOLOGY IS THAT EARTH UNIQUELY SUSTAINS CRUSTAL RECYCLING DRIVEN BY PLATE TECTONICS IN A WATERY MILIEU REQUIRED FOR GRANITE MELTS AND ULTIMATELY CONTINENTAL CRUST. WE NOW KNOW THAT THE DISTRIBUTION OF GRANITE IN OUR SOLAR SYSTEM IS NOT SO SIMPLISTIC. GRANITIC ROCKS OCCUR ON MARS AND SURPRISINGLY IN SOME ASTEROIDAL METEORITES. FOR EXAMPLE GRANITOID FRAGMENTS DOCUMENTED IN THE ADZHI-BOGDO LL3-6 CHONDRITE REPRESENT EVOLVED MAGMATISM ON AN UNKNOWN PARENT BODY CA. 100 MYR AFTER SOLAR SYSTEM FORMATION. ANOTHER SUCH FRAGMENT RECENTLY DESCRIBED IN THE POLYMICT UREILITE EET87720 DEEPENS THE MYSTERY OF EXTRATERRESTRIAL (ET) GRANITES. DID THESE FORM IN VOLATILE-RICH (NOW EXTINCT) PROTO-PLANETS? USING NEW ANALYTICAL TECHNIQUES COUPLED WITH GEOCHEMICAL MODELING MY RESEARCH WILL SEEK TO UNDERSTAND HOW AND WHEN ET GRANITES FORMED VIA TRACE ELEMENT (REE Y SC TI) AND STABLE ISOTOPE (D18O/D17O) COMPOSITIONS AND U-PB AGES OF ACCESSORY ZIRCON AND PHOSPHATES (APATITE/MERRILLITE) IN PREVIOUSLY UNINVESTIGATED GRANITIC CLASTS FROM ADZHI-BOGDO. MY INTERDISCIPLINARY WORK (GEOLOGY GEOCHEMISTRY GEOCHRONOLOGY COSMOCHEMISTRY PLANETARY SCIENCES) WILL DOCUMENT THESE ENIGMATIC GRANITES IN THE MOST COMPREHENSIVE STUDY TO DATE. I WILL COMPARE THE COMPOSITION OF ADZHI-BOGDO GRANITOIDS WITH A DATABASE OF KNOWN TERRESTRIAL (GEOROC) AND ET GRANITOIDS (E.G. MARTIAN GRANODIORITE; LUNAR GRANOPHYRE) TO TEST POSSIBLE PETROGENETIC RELATIONS AND TO POTENTIALLY UNRAVEL THE NATURE OF THE PARENT BODY. THIS RESEARCH WILL OFFER US A BROADER UNDERSTANDING OF THE HITHERTO UNAPPRECIATED DIVERSITY OF GRANITE FORMATION PROCESSES IN OUR SOLAR SYSTEM FROM THE EARLIEST TIMES.