Complex sentence: Marcel Alexandre Bertrand published a paper in 1884 that dealt with Alpine nappism; thin-skinned tectonics was implied in that paper but the actual term was not used until Buxtorf's 1907 publication.
Split into simpler sentences: Marcel Alexandre Bertrand published a paper in 1884 that dealt with Alpine nappism. Thin-skinned tectonics was implied in that paper but the actual term was not used until Buxtorf's 1907 publication.