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Could you explain lava from a geological perspective?
Literal
Lava [object-を] geographically explain-give-me-not-[question-か]?
Technical/scientific request. 地理学的に ('geographically') is the adverbial form of 地理学的 ('geographical'), itself derived from 地理学 ('geography') + 的 ('like/in the manner of'). 溶岩 ('lava,' literally 'dissolved rock'). Note: Technically 地質学 ('geology') would fit 'lava' better than 地理学 ('geography'); the source sentence may be slightly imprecise.