( Stratigraphy ( ( ( The study ) ( of ( ( ( ( ( ( separate layers ) , ) or ) strata ) , ) ( of ( ( ( deposits ( -LRB- ( ( for ( ( ( example soils ) , ) ( ( rocks , ) buildings ) ) ) -RRB- ) ) ) , ) ( which ( accumulate ( over time ) ) ) ) ) ) ) ) . ) )
(ROOT (FRAG (ADVP (RB Stratigraphy)) (NP (NP (DT The) (NN study)) (PP (IN of) (NP (NP (NP (JJ separate) (NNS layers)) (, ,) (CC or) (NP (NN strata)) (, ,)) (PP (IN of) (NP (NP (NP (NNS deposits)) (PRN (-LRB- -LRB-) (PP (IN for) (NP (NP (NN example) (NNS soils)) (, ,) (NP (NP (NNS rocks)) (, ,) (NP (NNS buildings))))) (-RRB- -RRB-))) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBP accumulate) (PP (IN over) (NP (NN time))))))))))) (. .)))
Stratigraphy The study of separate layers, or strata, of deposits (for example soils, rocks, buildings), which accumulate over time.
(ROOT (S (NP (PRP We)) (VP (VBP call) (NP (NP (DT the) (NN study)) (PP (IN of) (NP (NN rock) (NNS layers)))) (ADVP (RB stratigraphy))) (. .)))