Semarkona: Lessons for chondrule and chondrite formation

CONTENTS – T through V Distribution of FeO/(FeO+MgO) in Semarkona Chondrules: Implications for Chondrule Formation and Nebular Evolution

An Extreme O-rich Chondrule from Acfer 214 Ch Chondrite

Introduction: Oxygen isotope systematics between 16 O-rich and –poor reservoirs is well known in the solar system [1]. Since O is account for over 50 atomic % of terrestrial planets and also dominant in the solar nebular gas next to H and He [2], range and distribution of the systematics is an important tracer recording origin and global evolution of early solar system. The 16 O-rich endmenber,...

Chondrule-Forming Shock Fronts in the Solar Nebula: A Possible Unified Scenario for Planet and Chondrite Formation

Chondrules are mm-sized spherules found throughout primitive, chondritic meteorites. Flash heating by a shock front is the leading explanation of their formation. However, identifying a mechanism for creating shock fronts inside the solar nebula has been difficult. In a gaseous disk capable of forming Jupiter, the disk must have been marginally gravitationally unstable at and beyond Jupiter’s o...

simulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

Constraints on the Oxidation State of Chondrule Precursors from Titanium Xanes Analysis of Semarkona Chondrules