Calcium-aluminum-rich inclusions (CAIs) and chondrules are among the most predominant chondritic components contained within primitive meteorites. As CAIs are the first solids to form in the solar nebula, they contain a record of its earliest chemical and physical processes. Here we combine electron backscatter diffraction (EBSD) and ²⁶Al-²⁶Mg chronology techniques to determine the crystallographic properties and ages of CAI components that provide temporal as well as spatial constraints on their origins and subsequent processing in the solar protoplanetary disk. We find evidence of shock deformation within a CAI, suggesting that it was deformed as a free-floating object soon after the CAI formation at the beginning of the Solar System. Our results suggest that even though CAIs and chondrules formed in distinct environments and on different timescales, they were likely affected by similar shock processes that operated over large temporal (0 to ∼4 Ma) and spatial (0.2 to at least 2 to 3 au) extents. Our results imply that nebular shock events were active on a wider scale in the solar protoplanetary disk than previously recognized.

富含钙铝的包裹体 (CAI) 和球粒是原始陨石中最主要的球粒陨石成分之一。由于 CAI 是 太阳星云中最早形成的固体，因此它们包含了其最早的化学和物理过程的记录。在这里，我们结合电子背散射衍射 (EBSD) 和²⁶ Al- ²⁶Mg 年代学技术，用于确定 CAI 成分的晶体学特性和年龄，这些成分对它们的起源和太阳原行星盘中的后续处理提供时间和空间限制。我们在 CAI 内发现了冲击变形的证据，这表明它在太阳系开始时 CAI 形成后不久就变形为自由漂浮的物体。我们的研究结果表明，即使 CAI 和球粒粒在不同的环境和不同的时间尺度上形成，它们也可能受到类似的冲击过程的影响，这些过程在大时间（0 到 4 Ma）和空间（0.2 到至少 2 到 3 au）上运行范围。我们的研究结果表明，在太阳原行星盘中，星云冲击事件的活跃范围比以前认识到的要大。