7 EARLY AND LATE-STAGE DISK PROCESSES RECORDED BY CHONDRITIC COMPONENTS CA,AL-RICH INCLUSIONS (CAIS) COMPOSED OF SEVERAL INCLUSIONS (HEREAFTER, COMPLEX CAIS), ULTRAREFRACTORY (UR) CAIS, AND PLASTICALLY DEFORMED CAIS CAN POTENTIALLY CONSTRAIN THE DISTRIBUTION OF 26AL AND THE NATURE OF 16O-RICH AND 16O-POOR ISOTOPE RESERVOIRS IN THE EARLY SOLAR SYSTEM, THE CARRIERS OF UR RARE EARTH ELEMENTS (REES), AND THE PHYSICAL PROCESSES IN THE CAI-FORMING REGION(S). (I) TO UNDERSTAND THE NATURE OF 16O-RICH AND 16O-POOR RESERVOIRS IN THE EARLY SOLAR SYSTEM, THE DISTRIBUTION OF 26AL AND THE DURATION OF CAI THERMAL PROCESSING IN THE CAI-FORMING REGION, WE PROPOSE TO STUDY MINERALOGY (SEM, EPMA), OXYGEN AND AL-MG ISOTOPE SYSTEMATICS (SIMS) OF THE COMPLEX CAIS. (II) IN COLLABORATION WITH COLLABORATOR, WE PROPOSE TO MODEL GROWTH AND RADIAL TRANSPORT OF CAIS. (III) TO INVESTIGATE POSSIBLE CARRIERS OF UR REES AND UNDERSTAND THEIR ORIGIN (EVAPORATION VS. CONDENSATION), WE PROPOSE TO STUDY MINERALOGY (SEM, EPMA, EBSD), REE ABUNDANCES, AND ISOTOPIC COMPOSITIONS (O, AL-MG, CA, TI) OF THE UR CAIS (SIMS). (IV) TO UNDERSTAND WHEN AND HOW PLASTICALLY DEFORMED CAIS FORMED (GENTLE COLLISION BETWEEN INCOMPLETELY SOLIDIFIED INCLUSIONS OR RAPID TRANSPORT OF MOLTEN CAIS THROUGH NEBULAR GAS), WE PROPOSE TO STUDY THEIR MINERALOGY (SEM, EPMA) AND ISOTOPIC (O, AL-MG) COMPOSITIONS (SIMS). THE CH AND CB CHONDRITES AND CH/CB CHONDRITE ISHEYEVO (HEREAFTER, CH-CB CHONDRITES) ARE GENETICALLY RELATED METEORITES WHICH RECORDED A SINGLE-STAGE HIGHLY-ENERGETIC EVENT IN THE EARLY SOLAR SYSTEM, MOST LIKELY A HIGH VELOCITY ASTEROIDAL COLLISION. THIS EVENT RESULTED IN GENERATION OF AN IMPACT PLUME AND FORMATION OF THE YOUNGEST GENERATION OF CHONDRULES (MAGNESIAN SKELETAL AND CRYPTOCRYSTALLINE) DATED (4562.52 0.44 MA). THE LATE ACCRETED CH-CB CHONDRITES (>5 MYR AFTER CV CAIS) COULD HAVE SAMPLED DIFFERENT MATERIALS PRESENT IN THE DISK DURING LATE STAGE OF ITS EVOLUTION. (I) TO TEST THE PRESENCE OF MULTIPLE GENERATIONS OF CHONDRULES IN CH-CB CHONDRITES, WE PROPOSE TO STUDY MINERALOGY, PETROGRAPHY (SEM, EPMA), OXYGEN AND AL-MG ISOTOPE SYSTEMATICS (SIMS) OF THE CH-CB PORPHYRITIC CHONDRULES, INCLUDING THOSE WITH RELICT GROSSITE- AND HIBONITE-RICH CAIS. (II) TO UNDERSTAND THE ORIGIN OF METAMORPHOSED AND REDUCED CHONDRULES IN CH-CB CHONDRITES, WE PROPOSE TO STUDY THEIR MINERALOGY (EPMA) AND O-ISOTOPE COMPOSITIONS (SIMS). (III) TO UNDERSTAND THE NATURE OF COARSE PLAGIOCLASE FRAGMENTS IN CH-CB CHONDRITES, WE PROPOSE TO STUDY THEIR MINERALOGY (EPMA), OXYGEN AND AL-MG ISOTOPE SYSTEMATICS (SIMS). Funding Only Action ($189) 8/12/19 Not listed EARLY AND LATE-STAGE DISK PROCESSES RECORDED BY CHONDRITIC COMPONENTS CA AL-RICH INCLUSIONS (CAIS) COMPOSED OF SEVERAL INCLUSIONS (HEREAFTER COMPLEX CAIS) ULTRAREFRACTORY (UR) CAIS AND PLASTICALLY DEFORMED CAIS CAN POTENTIALLY CONSTRAIN THE DISTRIBUTION OF 26AL AND THE NATURE OF 16O-RICH AND 16O-POOR ISOTOPE RESERVOIRS IN THE EARLY SOLAR SYSTEM THE CARRIERS OF UR RARE EARTH ELEMENTS (REES) AND THE PHYSICAL PROCESSES IN THE CAI-FORMING REGION(S). (I) TO UNDERSTAND THE NATURE OF 16O-RICH AND 16O-POOR RESERVOIRS IN THE EARLY SOLAR SYSTEM THE DISTRIBUTION OF 26AL AND THE DURATION OF CAI THERMAL PROCESSING IN THE CAI-FORMING REGION WE PROPOSE TO STUDY MINERALOGY (SEM EPMA) OXYGEN AND AL-MG ISOTOPE SYSTEMATICS (SIMS) OF THE COMPLEX CAIS. (II) IN COLLABORATION WITH COLLABORATOR WE PROPOSE TO MODEL GROWTH AND RADIAL TRANSPORT OF CAIS. (III) TO INVESTIGATE POSSIBLE CARRIERS OF UR REES AND UNDERSTAND THEIR ORIGIN (EVAPORATION VS. CONDENSATION) WE PROPOSE TO STUDY MINERALOGY (SEM EPMA EBSD) REE ABUNDANCES AND ISOTOPIC COMPOSITIONS (O AL-MG CA TI) OF THE UR CAIS (SIMS). (IV) TO UNDERSTAND WHEN AND HOW PLASTICALLY DEFORMED CAIS FORMED (GENTLE COLLISION BETWEEN INCOMPLETELY SOLIDIFIED INCLUSIONS OR RAPID TRANSPORT OF MOLTEN CAIS THROUGH NEBULAR GAS) WE PROPOSE TO STUDY THEIR MINERALOGY (SEM EPMA) AND ISOTOPIC (O AL-MG) COMPOSITIONS (SIMS). THE CH AND CB CHONDRITES AND CH/CB CHONDRITE ISHEYEVO (HEREAFTER CH-CB CHONDRITES) ARE GENETICALLY RELATED METEORITES WHICH RECORDED A SINGLE-STAGE HIGHLY-ENERGETIC EVENT IN THE EARLY SOLAR SYSTEM MOST LIKELY A HIGH VELOCITY ASTEROIDAL COLLISION. THIS EVENT RESULTED IN GENERATION OF AN IMPACT PLUME AND FORMATION OF THE YOUNGEST GENERATION OF CHONDRULES (MAGNESIAN SKELETAL AND CRYPTOCRYSTALLINE) DATED (4562.52 0.44 MA). THE LATE ACCRETED CH-CB CHONDRITES (>5 MYR AFTER CV CAIS) COULD HAVE SAMPLED DIFFERENT MATERIALS PRESENT IN THE DISK DURING LATE STAGE OF ITS EVOLUTION. (I) TO TEST THE PRESENCE OF MULTIPLE GENERATIONS OF CHONDRULES IN CH-CB CHONDRITES WE PROPOSE TO STUDY MINERALOGY PETROGRAPHY (SEM EPMA) OXYGEN AND AL-MG ISOTOPE SYSTEMATICS (SIMS) OF THE CH-CB PORPHYRITIC CHONDRULES INCLUDING THOSE WITH RELICT GROSSITE- AND HIBONITE-RICH CAIS. (II) TO UNDERSTAND THE ORIGIN OF METAMORPHOSED AND REDUCED CHONDRULES IN CH-CB CHONDRITES WE PROPOSE TO STUDY THEIR MINERALOGY (EPMA) AND O-ISOTOPE COMPOSITIONS (SIMS). (III) TO UNDERSTAND THE NATURE OF COARSE PLAGIOCLASE FRAGMENTS IN CH-CB CHONDRITES WE PROPOSE TO STUDY THEIR MINERALOGY (EPMA) OXYGEN AND AL-MG ISOTOPE SYSTEMATICS (SIMS). ($189) 8/12/19 6 EARLY AND LATE-STAGE DISK PROCESSES RECORDED BY CHONDRITIC COMPONENTS CA,AL-RICH INCLUSIONS (CAIS) COMPOSED OF SEVERAL INCLUSIONS (HEREAFTER, COMPLEX CAIS), ULTRAREFRACTORY (UR) CAIS, AND PLASTICALLY DEFORMED CAIS CAN POTENTIALLY CONSTRAIN THE DISTRIBUTION OF 26AL AND THE NATURE OF 16O-RICH AND 16O-POOR ISOTOPE RESERVOIRS IN THE EARLY SOLAR SYSTEM, THE CARRIERS OF UR RARE EARTH ELEMENTS (REES), AND THE PHYSICAL PROCESSES IN THE CAI-FORMING REGION(S). (I) TO UNDERSTAND THE NATURE OF 16O-RICH AND 16O-POOR RESERVOIRS IN THE EARLY SOLAR SYSTEM, THE DISTRIBUTION OF 26AL AND THE DURATION OF CAI THERMAL PROCESSING IN THE CAI-FORMING REGION, WE PROPOSE TO STUDY MINERALOGY (SEM, EPMA), OXYGEN AND AL-MG ISOTOPE SYSTEMATICS (SIMS) OF THE COMPLEX CAIS. (II) IN COLLABORATION WITH COLLABORATOR, WE PROPOSE TO MODEL GROWTH AND RADIAL TRANSPORT OF CAIS. (III) TO INVESTIGATE POSSIBLE CARRIERS OF UR REES AND UNDERSTAND THEIR ORIGIN (EVAPORATION VS. CONDENSATION), WE PROPOSE TO STUDY MINERALOGY (SEM, EPMA, EBSD), REE ABUNDANCES, AND ISOTOPIC COMPOSITIONS (O, AL-MG, CA, TI) OF THE UR CAIS (SIMS). (IV) TO UNDERSTAND WHEN AND HOW PLASTICALLY DEFORMED CAIS FORMED (GENTLE COLLISION BETWEEN INCOMPLETELY SOLIDIFIED INCLUSIONS OR RAPID TRANSPORT OF MOLTEN CAIS THROUGH NEBULAR GAS), WE PROPOSE TO STUDY THEIR MINERALOGY (SEM, EPMA) AND ISOTOPIC (O, AL-MG) COMPOSITIONS (SIMS). THE CH AND CB CHONDRITES AND CH/CB CHONDRITE ISHEYEVO (HEREAFTER, CH-CB CHONDRITES) ARE GENETICALLY RELATED METEORITES WHICH RECORDED A SINGLE-STAGE HIGHLY-ENERGETIC EVENT IN THE EARLY SOLAR SYSTEM, MOST LIKELY A HIGH VELOCITY ASTEROIDAL COLLISION. THIS EVENT RESULTED IN GENERATION OF AN IMPACT PLUME AND FORMATION OF THE YOUNGEST GENERATION OF CHONDRULES (MAGNESIAN SKELETAL AND CRYPTOCRYSTALLINE) DATED (4562.52 0.44 MA). THE LATE ACCRETED CH-CB CHONDRITES (>5 MYR AFTER CV CAIS) COULD HAVE SAMPLED DIFFERENT MATERIALS PRESENT IN THE DISK DURING LATE STAGE OF ITS EVOLUTION. (I) TO TEST THE PRESENCE OF MULTIPLE GENERATIONS OF CHONDRULES IN CH-CB CHONDRITES, WE PROPOSE TO STUDY MINERALOGY, PETROGRAPHY (SEM, EPMA), OXYGEN AND AL-MG ISOTOPE SYSTEMATICS (SIMS) OF THE CH-CB PORPHYRITIC CHONDRULES, INCLUDING THOSE WITH RELICT GROSSITE- AND HIBONITE-RICH CAIS. (II) TO UNDERSTAND THE ORIGIN OF METAMORPHOSED AND REDUCED CHONDRULES IN CH-CB CHONDRITES, WE PROPOSE TO STUDY THEIR MINERALOGY (EPMA) AND O-ISOTOPE COMPOSITIONS (SIMS). (III) TO UNDERSTAND THE NATURE OF COARSE PLAGIOCLASE FRAGMENTS IN CH-CB CHONDRITES, WE PROPOSE TO STUDY THEIR MINERALOGY (EPMA), OXYGEN AND AL-MG ISOTOPE SYSTEMATICS (SIMS). Other Administrative Action $0 3/28/18 Not listed EARLY AND LATE-STAGE DISK PROCESSES RECORDED BY CHONDRITIC COMPONENTS CA AL-RICH INCLUSIONS (CAIS) COMPOSED OF SEVERAL INCLUSIONS (HEREAFTER COMPLEX CAIS) ULTRAREFRACTORY (UR) CAIS AND PLASTICALLY DEFORMED CAIS CAN POTENTIALLY CONSTRAIN THE DISTRIBUTION OF 26AL AND THE NATURE OF 16O-RICH AND 16O-POOR ISOTOPE RESERVOIRS IN THE EARLY SOLAR SYSTEM THE CARRIERS OF UR RARE EARTH ELEMENTS (REES) AND THE PHYSICAL PROCESSES IN THE CAI-FORMING REGION(S). (I) TO UNDERSTAND THE NATURE OF 16O-RICH AND 16O-POOR RESERVOIRS IN THE EARLY SOLAR SYSTEM THE DISTRIBUTION OF 26AL AND THE DURATION OF CAI THERMAL PROCESSING IN THE CAI-FORMING REGION WE PROPOSE TO STUDY MINERALOGY (SEM EPMA) OXYGEN AND AL-MG ISOTOPE SYSTEMATICS (SIMS) OF THE COMPLEX CAIS. (II) IN COLLABORATION WITH COLLABORATOR WE PROPOSE TO MODEL GROWTH AND RADIAL TRANSPORT OF CAIS. (III) TO INVESTIGATE POSSIBLE CARRIERS OF UR REES AND UNDERSTAND THEIR ORIGIN (EVAPORATION VS. CONDENSATION) WE PROPOSE TO STUDY MINERALOGY (SEM EPMA EBSD) REE ABUNDANCES AND ISOTOPIC COMPOSITIONS (O AL-MG CA TI) OF THE UR CAIS (SIMS). (IV) TO UNDERSTAND WHEN AND HOW PLASTICALLY DEFORMED CAIS FORMED (GENTLE COLLISION BETWEEN INCOMPLETELY SOLIDIFIED INCLUSIONS OR RAPID TRANSPORT OF MOLTEN CAIS THROUGH NEBULAR GAS) WE PROPOSE TO STUDY THEIR MINERALOGY (SEM EPMA) AND ISOTOPIC (O AL-MG) COMPOSITIONS (SIMS). THE CH AND CB CHONDRITES AND CH/CB CHONDRITE ISHEYEVO (HEREAFTER CH-CB CHONDRITES) ARE GENETICALLY RELATED METEORITES WHICH RECORDED A SINGLE-STAGE HIGHLY-ENERGETIC EVENT IN THE EARLY SOLAR SYSTEM MOST LIKELY A HIGH VELOCITY ASTEROIDAL COLLISION. THIS EVENT RESULTED IN GENERATION OF AN IMPACT PLUME AND FORMATION OF THE YOUNGEST GENERATION OF CHONDRULES (MAGNESIAN SKELETAL AND CRYPTOCRYSTALLINE) DATED (4562.52 0.44 MA). THE LATE ACCRETED CH-CB CHONDRITES (>5 MYR AFTER CV CAIS) COULD HAVE SAMPLED DIFFERENT MATERIALS PRESENT IN THE DISK DURING LATE STAGE OF ITS EVOLUTION. (I) TO TEST THE PRESENCE OF MULTIPLE GENERATIONS OF CHONDRULES IN CH-CB CHONDRITES WE PROPOSE TO STUDY MINERALOGY PETROGRAPHY (SEM EPMA) OXYGEN AND AL-MG ISOTOPE SYSTEMATICS (SIMS) OF THE CH-CB PORPHYRITIC CHONDRULES INCLUDING THOSE WITH RELICT GROSSITE- AND HIBONITE-RICH CAIS. (II) TO UNDERSTAND THE ORIGIN OF METAMORPHOSED AND REDUCED CHONDRULES IN CH-CB CHONDRITES WE PROPOSE TO STUDY THEIR MINERALOGY (EPMA) AND O-ISOTOPE COMPOSITIONS (SIMS). (III) TO UNDERSTAND THE NATURE OF COARSE PLAGIOCLASE FRAGMENTS IN CH-CB CHONDRITES WE PROPOSE TO STUDY THEIR MINERALOGY (EPMA) OXYGEN AND AL-MG ISOTOPE SYSTEMATICS (SIMS). $0 3/28/18 5 EARLY AND LATE-STAGE DISK PROCESSES RECORDED BY CHONDRITIC COMPONENTS CA,AL-RICH INCLUSIONS (CAIS) COMPOSED OF SEVERAL INCLUSIONS (HEREAFTER, COMPLEX CAIS), ULTRAREFRACTORY (UR) CAIS, AND PLASTICALLY DEFORMED CAIS CAN POTENTIALLY CONSTRAIN THE DISTRIBUTION OF 26AL AND THE NATURE OF 16O-RICH AND 16O-POOR ISOTOPE RESERVOIRS IN THE EARLY SOLAR SYSTEM, THE CARRIERS OF UR RARE EARTH ELEMENTS (REES), AND THE PHYSICAL PROCESSES IN THE CAI-FORMING REGION(S). (I) TO UNDERSTAND THE NATURE OF 16O-RICH AND 16O-POOR RESERVOIRS IN THE EARLY SOLAR SYSTEM, THE DISTRIBUTION OF 26AL AND THE DURATION OF CAI THERMAL PROCESSING IN THE CAI-FORMING REGION, WE PROPOSE TO STUDY MINERALOGY (SEM, EPMA), OXYGEN AND AL-MG ISOTOPE SYSTEMATICS (SIMS) OF THE COMPLEX CAIS. (II) IN COLLABORATION WITH COLLABORATOR, WE PROPOSE TO MODEL GROWTH AND RADIAL TRANSPORT OF CAIS. (III) TO INVESTIGATE POSSIBLE CARRIERS OF UR REES AND UNDERSTAND THEIR ORIGIN (EVAPORATION VS. CONDENSATION), WE PROPOSE TO STUDY MINERALOGY (SEM, EPMA, EBSD), REE ABUNDANCES, AND ISOTOPIC COMPOSITIONS (O, AL-MG, CA, TI) OF THE UR CAIS (SIMS). (IV) TO UNDERSTAND WHEN AND HOW PLASTICALLY DEFORMED CAIS FORMED (GENTLE COLLISION BETWEEN INCOMPLETELY SOLIDIFIED INCLUSIONS OR RAPID TRANSPORT OF MOLTEN CAIS THROUGH NEBULAR GAS), WE PROPOSE TO STUDY THEIR MINERALOGY (SEM, EPMA) AND ISOTOPIC (O, AL-MG) COMPOSITIONS (SIMS). THE CH AND CB CHONDRITES AND CH/CB CHONDRITE ISHEYEVO (HEREAFTER, CH-CB CHONDRITES) ARE GENETICALLY RELATED METEORITES WHICH RECORDED A SINGLE-STAGE HIGHLY-ENERGETIC EVENT IN THE EARLY SOLAR SYSTEM, MOST LIKELY A HIGH VELOCITY ASTEROIDAL COLLISION. THIS EVENT RESULTED IN GENERATION OF AN IMPACT PLUME AND FORMATION OF THE YOUNGEST GENERATION OF CHONDRULES (MAGNESIAN SKELETAL AND CRYPTOCRYSTALLINE) DATED (4562.52 0.44 MA). THE LATE ACCRETED CH-CB CHONDRITES (>5 MYR AFTER CV CAIS) COULD HAVE SAMPLED DIFFERENT MATERIALS PRESENT IN THE DISK DURING LATE STAGE OF ITS EVOLUTION. (I) TO TEST THE PRESENCE OF MULTIPLE GENERATIONS OF CHONDRULES IN CH-CB CHONDRITES, WE PROPOSE TO STUDY MINERALOGY, PETROGRAPHY (SEM, EPMA), OXYGEN AND AL-MG ISOTOPE SYSTEMATICS (SIMS) OF THE CH-CB PORPHYRITIC CHONDRULES, INCLUDING THOSE WITH RELICT GROSSITE- AND HIBONITE-RICH CAIS. (II) TO UNDERSTAND THE ORIGIN OF METAMORPHOSED AND REDUCED CHONDRULES IN CH-CB CHONDRITES, WE PROPOSE TO STUDY THEIR MINERALOGY (EPMA) AND O-ISOTOPE COMPOSITIONS (SIMS). (III) TO UNDERSTAND THE NATURE OF COARSE PLAGIOCLASE FRAGMENTS IN CH-CB CHONDRITES, WE PROPOSE TO STUDY THEIR MINERALOGY (EPMA), OXYGEN AND AL-MG ISOTOPE SYSTEMATICS (SIMS). Funding Only Action $163.0k 8/15/17