| More

COMPARISON OF SAMPLING TECHNIQUES FOR ISOTOPIC ANALYSIS OF SHALLOW MARINE CARBONATES

Views: 101 Downloads: 80
D. Psomiadis, E. Dotsika, K. Albanakis, N. Zisi, D. Poutoukis, A. Lazaridis
D. Psomiadis, E. Dotsika, K. Albanakis, N. Zisi, D. Poutoukis, A. Lazaridis

Abstract


Recent studies have widely used beachrock samples for isotopic and dating techniques; however the source matrix of the analyzed samples varied. Bulk rock material, skeletal fragments, allochems and pure cement have been used in different studies. Basic parameters of each technique are crucial for the accuracy and the reliability of the obtained results, affecting each time important agents. This study includes isotopic analyses (δ13C, δ18O) of marine carbonates (beachrocks) from the coasts of N. Greece (Thassos island). The sub-sampling was carried out along beachrock cores, following different procedures and protocols. The obtained results show in general expecting differences in isotopic composition of the samples. Experiments that included heating of the samples show an influence on oxygen isotope. Different separation and selection of sampling material affect majorly the isotope of carbon (13C). Differences are attributed to the origin of the carbonate component of the analyzed material. The study indicates that a full-range of comparison experiments should be implemented in order to define in detail the analytical parameters that affect isotopic measurements. The results of that kind of studies will be used not only in stable isotope analyses but also in a variety of methods used in palaeoclimatic and palaeoenvironmental research.


Keywords


marine cements; beachrock; sampling; stable isotopes;

Full Text:

PDF

References


Beier, J.A., 1985. Diagenesis of Quaternary Bahamian beachrock: petrographic and isotopic evidence,

Journal of Sedimentary Petrology, 55 (5), 755-761.

Caldas, L.H.O., Stattegger, K., Vital, H., 2006. Holocene sea-level history: Evidence from coastal sediments

of the northern Rio Grande do Norte coast, NE Brazil. Marine Geology, 228, 39-53.

Calvet, F., Cabrera, M.C., Carracedo, J.C., Mangas, J., Pérez-Torrado, F.J., Recio, C., Travé, A., 2003.

Beachrocks from the island of La Palma (Canary Islands, Spain). Marine Geology, 197 (1-4), 75-93.

Chaves, N.S., Sial, A.N., 1998. Mixed oceanic and freshwater depositional conditions for beachrocks of

northeast Brazil: Evidence from carbon and Oxygen isotopes. International Geology Review, 40 (8),

-754.

Clayton, R.N., 1961. Oxygen isotope fractionation between calcium carbonate and water. The Journal of

Chemical Physics, 34 (3), 724-726.

Cooper, G.A., 1991. Beachrock formation in low latitudes: implications for coastal evolutionary models.

Marine Geology, 98, 145-154.

(5) XLIII, No 5 – 2387

Deboo, P.B., 1962. A preliminary petrographic study of beach rock. Natl. Coastal and Shallow Water Research

Conf. (1st), 456-458.

Emery, K.O., Tracey, J.I., Jr., Ladd, H.S., 1954. Geology of Bikini and nearby atolls. U.S. Geol. Survey

Prof. Pap. 260-A, 265 pp.

Friedman, G.M., 2004. Holocene chronostratigraphic beachrocks and their geologic climatic significance.

Geochemical Investigations in Earth and Space Science: A Tribute to Isaac R. Kaplan, 125-142.

Ginsburg, R.N., 1953. Beach rock in South Florida. Journal of Sedimentary Petrology, 23, 85-92.

Guerra, N.C., Kiang, C.H., Sial, A.N., 2005. Carbonate cements in contemporaneous beachrocks,

Jaguaribe beach, Itamaracá island, northeastern Brazil: Petrographic, geochemical and isotopic aspects.

Anais da Academia Brasileira de Ciencias, 77 (2), 343-352.

Hanor, J.S., 1978. Precipitation of beachrock cements: mixing of marine and meteoric waters vs. CO2 degassing.

Journal of Sedimentary Petrology, 48, 489-501.

Holail, H., Rashed, M., 1992. Stable isotopic composition of carbonate-cemented recent beachrock along

the Mediterranean and the Red Sea coasts of Egypt. Marine Geology, 106 (1-2), 141-148.

Hopley, D., 1986. Beachrock as a sea-level indicator. In: Van de Plassche O (ed) Sea-level Research. Galliard

Printers, Great Yarmouth, 157–173.

Land, L.S., 1970. Phreatic versus vadose meteoric diagenesis of limestones: Evidence from a fossil water

table. Sedimentology, 14, 175-185.

Longman, M.W., 1980. Carbonate diagenetic textures from nearsurface diagenetic environments. American

Association of Petroleum Geologists Bulletin, 64(4), 461-487.

Milliman, J.D., 1974. Marine Carbonates. Springer-Verlag, Berlin, 375 pp..

Moore, C.H., 1973. Intertidal carbonate cementation Grand Cayman, West Indies. Journal of Sedimentary

Petrology, 43, 591-602.

Moore, C.H., Jr., Billings, G.K., 1971. Preliminary model of beachrock cementation, Grand Cayman island,

B.W.I. In: Bricker, O.P. (Ed.), Carbonate Cements. Johns Hopkins Press, Baltimore, MD, 40-

Mountrakis, D., 1985. Geology of Greece. University Studio Press, Thessaloniki, 27-35 (in greek).

Psomiadis, D., Tsourlos, P., Albanakis, K., 2009a. Electrical Resistivity Tomography mapping of

beachrocks: application to the island of Thassos (N. Greece). Environmental Earth Sciences, 59(1),

-240, doi: 10.1007/s12665-009-0021-9.

Psomiadis, D., Vogiatzis, D., Albanakis, K., Christaras, V., Dotsika, E., Zisi, N., 2009b. Valuation of

beachrock formation through ultrasonic pulse technique. A method to compare porosities in horizontal

and vertical aspects. Geophysical Research Abstracts, Vol. 11, EGU2009-1472, Vienna, Austria.

Rey, D., Rubio, B., Bernabeu, A.M., Vilas, F., 2004. Formation, exposure, and evolution of a high-latitude

beachrock in the intertidal zone of the Corrubedo complex. Sedimentary Geology, 169, 93-105.

Russell, R.J., 1962. Origin of beach rock. Zeitschrift fur Geomophologie, 6, 1-16.

Russell, R.J., 1963. Beach rock. Journal of Tropical Geography, 17, 24-27.

Russell, R.J., McIntire, W.G., 1965. Southern hemisphere beach rock. Geogr. Rev. 55, 17-45.

Schmalz, R.F., 1971. Formation of beachrock at Eniwetok Atoll, In: Bricker P (ed) Carbonate Cements.

Johns Hopkins Press, Baltimore, MD, 17-24.

Scholten, J.J., 1972. Beach rock: a literature study with special reference to the recent literature. Zentralbl.

Geol. Palaontol. Teil I, 351-368.

Spurgeon, D., Davis Jr., R.A., Shinnu, E.A., 2003. Formation of ‘Beach Rock’ at Siesta Key, Florida and

XLIII, No 5 – 2388

its influence on barrier island development. Marine Geology, 200 (1-4), 19-29.

Stoddart, D.R., Cann, J.R., 1965. Nature and origin of beach rock. Journal of Sedimentary Petrology, 56,

-428.

Vieira, M.M., De Ros, L.F., 2006. Cementation patterns and genetic implications of Holocene beachrocks

from northeastern Brazil. Sedimentary Geology, 192, 207-230.

Vieira, M. , Sial, A., de Ros, L., 2006. Origin of Holocene Beachrock Cements in Northeastern Brazil Revealed

from Carbon and Oxygen Isotopes. V South American Symposium on Isotope Geology, IGCP

, Montevideo, Uruguay.


Refbacks

  • There are currently no refbacks.


Copyright (c) 2017 D. Psomiadis, E. Dotsika, K. Albanakis, N. Zisi, D. Poutoukis, A. Lazaridis

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.