{"id":41462,"date":"2022-09-19T07:29:53","date_gmt":"2022-09-19T07:29:53","guid":{"rendered":"https:\/\/www.hgi-cgs.hr\/?page_id=41462"},"modified":"2022-09-19T07:43:03","modified_gmt":"2022-09-19T07:43:03","slug":"doktorandica-ivona-ivkic-filipovic-boravila-u-britanskoj-geoloskoj-sluzbi-bgs","status":"publish","type":"page","link":"https:\/\/www.hgi-cgs.hr\/en\/doktorandica-ivona-ivkic-filipovic-boravila-u-britanskoj-geoloskoj-sluzbi-bgs\/","title":{"rendered":"Doktorandica Ivona Ivki\u0107 Filipovi\u0107 boravila u Britanskoj geolo\u0161koj slu\u017ebi (BGS)"},"content":{"rendered":"

[et_pb_section fb_built=”1″ fullwidth=”on” _builder_version=”4.16″ custom_padding=”0px||0px|||” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_fullwidth_slider _builder_version=”4.16″ min_height=”112px” height=”400px” custom_margin=”0px||||false|false” custom_padding=”0px||18px||false|false” auto=”on” auto_ignore_hover=”on” locked=”off” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_slide heading=”Hrvatski geolo\u0161ki institut” _builder_version=”4.16″ header_font=”|||on|||||” background_image=”https:\/\/www.hgi-cgs.hr\/wp-content\/uploads\/2020\/03\/Br\u010di\u0107_Drvenik02-scaled.jpg” background_enable_image=”on” locked=”off” global_colors_info=”{}” sticky_transition=”on” theme_builder_area=”post_content”][\/et_pb_slide][et_pb_slide heading=”Hrvatski geolo\u0161ki institut” _builder_version=”4.16″ header_font=”|||on|||||” background_image=”https:\/\/www.hgi-cgs.hr\/wp-content\/uploads\/2020\/03\/ban2-scaled.jpg” background_enable_image=”on” locked=”off” global_colors_info=”{}” sticky_transition=”on” theme_builder_area=”post_content”][\/et_pb_slide][et_pb_slide heading=”Hrvatski geolo\u0161ki institut” _builder_version=”4.16″ header_font=”|||on|||||” background_image=”https:\/\/www.hgi-cgs.hr\/wp-content\/uploads\/2020\/03\/20190228_094232-scaled.jpg” background_enable_image=”on” locked=”off” global_colors_info=”{}” sticky_transition=”on” theme_builder_area=”post_content”][\/et_pb_slide][et_pb_slide heading=”Hrvatski geolo\u0161ki institut” _builder_version=”4.16″ header_font=”|||on|||||” background_image=”https:\/\/www.hgi-cgs.hr\/wp-content\/uploads\/2020\/03\/ban3-scaled.jpg” background_enable_image=”on” locked=”off” global_colors_info=”{}” sticky_transition=”on” theme_builder_area=”post_content”][\/et_pb_slide][et_pb_slide heading=”Hrvatski geolo\u0161ki institut” _builder_version=”4.16″ header_font=”|||on|||||” background_image=”https:\/\/www.hgi-cgs.hr\/wp-content\/uploads\/2020\/03\/Bijele_stijene-Gorski_kotar-scaled.jpg” background_enable_image=”on” locked=”off” global_colors_info=”{}” sticky_transition=”on” theme_builder_area=”post_content”][\/et_pb_slide][et_pb_slide heading=”Hrvatski geolo\u0161ki institut” _builder_version=”4.16″ header_font=”|||on|||||” background_image=”https:\/\/www.hgi-cgs.hr\/wp-content\/uploads\/2020\/03\/ban4-scaled.jpg” background_enable_image=”on” locked=”off” global_colors_info=”{}” sticky_transition=”on” theme_builder_area=”post_content”][\/et_pb_slide][et_pb_slide heading=”Hrvatski geolo\u0161ki institut” _builder_version=”4.16″ header_font=”|||on|||||” background_image=”https:\/\/www.hgi-cgs.hr\/wp-content\/uploads\/2020\/03\/ban5-scaled.jpg” background_enable_image=”on” locked=”off” global_colors_info=”{}” sticky_transition=”on” theme_builder_area=”post_content”][\/et_pb_slide][\/et_pb_fullwidth_slider][\/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.16″ global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_row _builder_version=”4.16″ global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ _builder_version=”4.16″ global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_text _builder_version=”4.16″ text_font_size=”32px” header_2_text_color=”#1e5096″ global_colors_info=”{}” theme_builder_area=”post_content”]<\/p>\n

NOVOSTI<\/strong><\/h2>\n

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Doktorandica Ivona Ivki\u0107 Filipovi\u0107 boravila u Britanskoj geolo\u0161koj slu\u017ebi (BGS)<\/strong><\/h2>\n

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Tijekom svibnja 2022. godine doktorandica Ivona Ivki\u0107 Filipovi\u0107 provela je znanstveno usavr\u0161avanje u laboratoriju za stabilne izotope Britanske geolo\u0161ke slu\u017ebe (Keyworth, Nottingham) pod vodstvom Prof. Melanie Leng. Svrha usavr\u0161avanja bila je analiza stabilnih izotopa kisika i ugljika na jezerskom karbonatu i lju\u0161turicama ostrakoda iz kr\u0161kih jezera i paleojezera u Dalmaciji. Boravak u UK u trajanju od mjesec dana potpomognut je stipendijom zaklade British Scholarship Trust i financijskom potporom Zavoda za mineralne sirovine Hrvatskog geolo\u0161kog instituta.<\/p>\n

Za analize stabilnih izotopa odabrane su jezgre sedimenata iz Velog blata na otoku Pagu, zatim iz paleojezera u Prolo\u0161kom blatu u Imotskom polju te Visova\u010dkog jezera u sklopu Nacionalnog parka Krka. Analize jezerskog karbonata odra\u0111ene su na sve tri jezgre, dok su analize na lju\u0161turicama ostrakoda napravljene samo na jezgri iz Velog blata jer je pokazala najbolji potencijal za iste (zastupljenost vrsta, o\u010duvanost mikrofosila od dijagenetskih procesa). Inicijalna priprema uzoraka odra\u0111ena je u laboratorijima Zavoda za mineralne sirovine Hrvatskog geolo\u0161kog instituta, a sastojala se od uklanjanja svih ne\u017eeljenih komponenti sedimenta, u prvome redu organske tvari, i mikropaleontolo\u0161ke analize ostrakoda u odabranim uzorcima (identifikacija vrsta, kvantitativna obrada, izdvajanje lju\u0161turica za izotopnu analizu). Uzorci su se dalje pripremali u laboratorijima BGS-a, u \u0161to spada otapanje jezerskog karbonata u fosfornoj kiselini i dobivanje plina CO2<\/sub> za analizu na masenom spektrometru, te \u010di\u0161\u0107enje lju\u0161turica ostrakoda metodom plasma ashinga<\/em>, radi uklanjanja zaostale organske tvari. Za potvrdu prisutnosti endogenog jezerskog karbonata (koji je nastao u jezeru) provedena je SEM analiza na odabranim uzorcima.<\/p>\n

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Slika 1. Priprema uzoraka jezerskog karbonata (bijeli sediment u manjoj staklenoj posudici) za reakciju s fosfornom kiselinom (prozirna teku\u0107ina u ve\u0107oj posudici). Kao produkt reakcije nastaje plin CO2<\/sub> koji nosi informaciju o izotopnom sastavu te se ekstrahira za analizu na masenom spektrometru (IRMS).<\/p>\n

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Dobivene rezultate stabilnih izotopa kisika i ugljika iz Velog blata i Prolo\u0161kog blata kombinirat \u0107e se s drugim metodama (geokemijskim, sedimentolo\u0161kim, mikropaleontolo\u0161kim, geomorfolo\u0161kim) koje \u0107e doktorandica koristit u svojoj doktorskoj disertaciji, a u svrhu rekonstrukcije paleookoli\u0161nih i paleooklimatskih uvjeta u navedenim jezerima tijekom Holocena. Navedeni pristup istra\u017eivanja predstavljat \u0107e doprinos kvartarnim istra\u017eivanjima u Hrvatskoj te \u0107e upotpuniti terestri\u010dke paleoklimatske podatke za podru\u010dje Dalmacije.<\/p>\n

[\/et_pb_text][et_pb_image src=”https:\/\/www.hgi-cgs.hr\/wp-content\/uploads\/2022\/09\/Picture2.jpg” title_text=”Picture2″ _builder_version=”4.18.0″ _module_preset=”default” width=”45%” module_alignment=”center” hover_enabled=”0″ border_radii=”on|5px|5px|5px|5px” box_shadow_style=”preset1″ box_shadow_blur=”15px” global_colors_info=”{}” theme_builder_area=”post_content” align=”center” sticky_enabled=”0″][\/et_pb_image][et_pb_text _builder_version=”4.18.0″ _module_preset=”default” theme_builder_area=”post_content” text_font_size=”12px” custom_margin=”-21px|250px||250px|false|false” hover_enabled=”0″ sticky_enabled=”0″]<\/p>\n

Slika 2. Priprema dobivenog CO2<\/sub> za analizu na masenom spektromentru (IRMS).<\/p>\n

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NOVOSTIDoktorandica Ivona Ivki\u0107 Filipovi\u0107 boravila u Britanskoj geolo\u0161koj slu\u017ebi (BGS)Tijekom svibnja 2022. godine doktorandica Ivona Ivki\u0107 Filipovi\u0107 provela je znanstveno usavr\u0161avanje u laboratoriju za stabilne izotope Britanske geolo\u0161ke slu\u017ebe (Keyworth, Nottingham) pod vodstvom Prof. Melanie Leng. Svrha usavr\u0161avanja bila je analiza stabilnih izotopa kisika i ugljika na jezerskom karbonatu i lju\u0161turicama ostrakoda iz kr\u0161kih jezera […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-41462","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/pages\/41462","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/comments?post=41462"}],"version-history":[{"count":2,"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/pages\/41462\/revisions"}],"predecessor-version":[{"id":41467,"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/pages\/41462\/revisions\/41467"}],"wp:attachment":[{"href":"https:\/\/www.hgi-cgs.hr\/en\/wp-json\/wp\/v2\/media?parent=41462"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}