Wyniki badań złóż bursztynu w okolicach Gdańska

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.. . . .

S.R

~

sa. B.··...,; .0 . rozw6jumQrfologicznyom wybrzeb: Poiski w !wietle dawnych form brzegowych. Stud.

Soc. Se. Torunensis. Sec. C. vol.· 5, 1963.

4.Ro s a· B. - Obszar pohldniowo-baltycki w

okre-SUMMARY

.. ReIlatively large &ccumulations of amber were

.found in the course of geolol§i<:l:\l surve~ carried out

. in .. Gdansk area. in years 1972-1973. The area' studied, . representing coastal flat and beach zones in

morpho-.

aogy,

·is buiJ,t in the' subsurface of· Holocene supral1t-· ,toral deposits resting on Plebrtocene deposits. Amber

was' found in the youngest l1thologicaJ. link -

cbm-plexof post-Littorina sands with thin ;peat

interc:a-latioos, 8 m ·thICk; .

Fields studies and caiculatiool9. made have shown

that amber is' either di.spe.n!ed throughout deposits

or forms local fairly' dch concentrations, being

al-ways accompanied by Plant debris resembling t~t

. l~t ,by waves .on modern beaches. Concentration of

amber·ranges.from. O,9.g/mB to 2597. g/roB •.

The: analysis af the mode

and

quantitative-quaY-·tative character -af occurrence of

amber

indicates

· ,that it

was

deposited in result of action of two

pro-· cesses ·eooperatin·g in eoastal zone: eOBstal sedimen-tation and marine floods.

The results of statifftical ealcu:lations indicate that

95 percent of the amber accumulations correspond to

those

originating on modern beaches

and

merely 0.7

. .Percent· of the former· have no modern equivalents

· known fro;m that zone. Such proportions' seem . to reflect the continudty ()feoastal sedimentation and

ephemeral. nature of 1;Oarine floods.. .

sie ostatniego zlodowacenia

r.

w holocenie. Pr.

:geogr., 1968, nr 74.

.s ..

S

a

m son 0 w Jcz J. - Nowy swidrowy ()tw6r na

Helu. Sprawozdanie PIG, 1935, t. 8, z. 3.

PE3IOME

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