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FAUNAL SUCCESSIONurutan fauna (Abbe, 1777)
Fossils difer according to theirgeological ages; ossils in lower
ormations are unlike those in higherbeds (Schenk, 1940, opcit, p 1!"#$Fossils aunas and %oras succeed oneanother in a de&nite and determinableorder ('nthon, opcit,p)9$
*rinsip ini ang mendasari konsepbiostratigra& ang berkembangmen+adi chronostratigra&
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STRATA IDENTIFIED BY FOSSILS(Smit, 1!1")
he practicabilit o thus distinguishing so great a -ariet omaterials in the earth, as successi-el terminate at thesurace being admitted, and their courses delineated in thelarge map o the Strata +ust published; . ma nowcon&dentl proceed with a general account o thoseorgani/ed ossils which . ound imbedded in each Stratum,and which &rst enable me more particularl to distinguishone Stratum rom another (Smith 1)1,p$
2Similar strata contain similar ossils3 (smith,1)1!$
Strata can be distinguished b their characteristic
ossils (oodord 19#", op cit, p"5; Schenck 1940,p 1!"451!""$
6en+elaskan bahwa para ahli geologi pada awalnamenaruh minat ang sangat besar pada batuan,lapisan serta hubungan lapisan di lapangan *adaperkembanganna manusia mulai tertarik pada urutanlapisan dengan isi osilna
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Cr#$$ Cuttin%Re&ati#n$i'$
(Car&e$ Le&&, 1!*) he thing doing the cutting is ounger
than the rock being cut
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UNIFOR+ITARIANIS+(UTTON, 17!-)
.n e7amining things present, we ha-e data romwhich to reason with regards to that which is tohappen hereater hereore, upon the
superposition that the operations oh nature aree8uable and stead, we &nd, in naturalappearances, means or concluding a certainportion o time to ha-e necessaril elapsed in theproduction o these e-ents o which we see theefects (:amanperm umumna panas berbeda dengan /amansebelumna, ?arbon ang bersiat lembab,namun proses ang membentuk semua ge+alageologi dapat dikatakan sama
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.ame$ utt#n (17/"0177
CE) Scottish geologist
@e-eloped the
laws o geolog Aonsidered the
Father o 6odernBeolog
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UTTON2S DOCTRINE OFUNIFOR+ITY
( 3&afair,1!*/ ) 2'mid all the re-olutions o the globe the econom o
=ature has been uniorm, and her laws are the onl thingthat ha-e resisted the general mo-ement he ri-ers and
the rock, the seas, and the continents ha-e been changedin all their parts; but the laws which describe thosechanges, and the rules to which the are sub+ect, ha-eremained in-ariabl the same3
he present is the ke to he past
=o -estiges o the beginning, no -estiges o the end C-erthing changes, onl the law o changes does not
change *erubahan ter+adi sangat lambat perubahan besar *roses di bumi ter+adi secara berulang D ulang siklus
Eermacam +enis batuan
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FACIES ( 4ree$&, 1!")
he term acies designate the diferences,whate-er the ma be between ormations o thesame age; the diferences ma be either inpetrograph composition, resulting the nature othe substances deposited, or paleontologdiferences, resulting rom the li-ing condition othe animal and plant ossils
Facies are then de&nitel the diferent kinds o
deposits, sedimentar or other, which can beproduced simultaneousl, at a gi-en geologicalmoment, +ust as is the case at the present time
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5ALTER LA5 6 UU+5ALTER
( 5a&ter, 1!8 ) .n other words acies that occur in a conormable -ertical
core se8uences were ormed in laterall ad+acentdepositional en-ironment
.t is especiall important to note as 6iddletown ( 19!# $pointed out, that althers Gaw applies onl to successionwithout ma+or erosion or non depositional breaks hereoreit is e7tremel important to recogni/e such erosion or nondepositional breaks in -ertical se8uences
Fasies ang pada dasarna berarti perbedaan ciripaleontologi dan batuan pada umur ang sama, dalamprektek pengenalanna di lapangan sulit diker+akan pada
daerah tropis :al ini karena terbatasna bentabgsingkapan
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LITOSTRATI4RA3IC UNITSATUAN LITOSTRATI4RAFI ( 3#9e&&, 1!!!
) he discrimination between rock D
stratigraphic units is essential or theclassi&cation and nomenclature o
sedimentar rocks *erkembangan stratigra& selan+utna
menun+ukkan pandangan manusia terhadaphal ang bersiat praktis, terapan 'hlipertama dalam hal stratigra& ang
menga+ukan pentingna terapan adalah*owell ( 1))) $ @irektur S' BeologicalSur-e di 'merika
Habaran lebih lan+ut dapat dibaca pada babSandi Stratigra& .ndonesia
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