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Constantin Caspar Andreas von Grewingk was  a distinguished Estonian geologist and mineralogist, recognized for his foundational contributions to the geological and archaeological study of the Baltic region and Alaska.

Grewingk's lineage is thought to have originated from Holland before settling in Courland. His academic journey began at the Birkenruh State High School, followed by higher education in mineralogy and geology at the University of Dorpat from 1837, where he earned a candidate of philosophy degree with a thesis on Mitscherlich's theory of homeomorphism and its influence on mineralogy. Grewingk furthered his studies in Berlin and Freiberg during the winter of 1843/44. In December 1843, he achieved his Doctor of Philosophy in Jena, presenting a dissertation on chromium compounds.

In April 1846, Grewingk was appointed curator of the mineralogical collection at the Imperial Academy of Sciences in Saint Petersburg, marking the beginning of a prolific career in geology. His numerous geological expeditions contributed significantly to the field, and in 1854, his expertise led to his appointment as a professor of mineralogy and geology at the University of Dorpat.

Grewingk's work extended beyond geology to include archaeological research, pioneering the scientific investigation of the Russian Baltic Sea provinces from an archaeological perspective. His contributions to the understanding of the geological and archaeological landscapes of these regions were groundbreaking.

Among his notable works are "Contribution to the knowledge of the orographic and geognostic nature of the north-west coast of America with the adjacent islands" (St. Petersburg, 1850) and "Geology of Livonia and Courland" (Dorpat, 1859). His research on meteorite falls in Livonia and Courland, in collaboration with Carl Ernst Heinrich Schmidt, and studies on the Stone Age in the Baltic Sea provinces further underscored his diverse interests and impact on natural sciences.

The Grewingk Glacier near Homer, Alaska, stands as a testament to his enduring legacy, named in honor of his contributions to geology. Grewingk's work remains a valuable resource for researchers and scholars, reflecting his significant role in the development of geological and archaeological sciences in the 19th century.