Matches in SemOpenAlex for { <https://semopenalex.org/work/W4213358882> ?p ?o ?g. }
- W4213358882 endingPage "103717" @default.
- W4213358882 startingPage "103717" @default.
- W4213358882 abstract "The Cretaceous-Paleogene (K-Pg) boundary event, triggered by the Chicxulub asteroid impact in Mexico ∼66 Myr ago, is recognized as one of the major environmental crises in Earth's history. Its effects on the evolution of tropical vegetation were drastic, giving rise to the closed-canopy tropical rainforest. Despite of its importance, the actual K-Pg boundary event layer has not yet been identified in terrestrial sections within tropical latitudes. Here, we study a sediment core (Diablito-1) from northern Colombia and described its lithofacies, palynostratigraphic content, magnetic susceptibility and geochemical composition, including the concentration of key elements linked to a meteoritic contribution such as iridium. We found an 8.2 cm-thick (0.27 inches) interval with gravel-size calcareous intraclasts, broken skeletal fragments and siliceous spherules that were transported during a short-duration high-energy event into the coastal plain. Very fine-to medium-grained spherules, concentrated in several layers of the flow structure, could be interpreted as derived from the K-Pg impact event. This thin intraclastic packstone interval lies within the extinction level of the palynomorph Echimonocolpites franciscoi, an important biostratigraphic event associated with the K-Pg boundary in Colombia. In addition, this layer is associated with both a small iridium anomaly and high concentration of several other major and trace elements that are occurring above a low Magnetic Susceptibility (MS) interval and within the initial phase of a high MS interval. These lines of evidence support the position of the K-Pg event layer within the thin interval that includes the spherules in the Diablito-1 core." @default.
- W4213358882 created "2022-02-24" @default.
- W4213358882 creator A5017626343 @default.
- W4213358882 creator A5032588554 @default.
- W4213358882 creator A5036151692 @default.
- W4213358882 creator A5049606562 @default.
- W4213358882 creator A5051182893 @default.
- W4213358882 creator A5051456788 @default.
- W4213358882 creator A5062114510 @default.
- W4213358882 creator A5068585319 @default.
- W4213358882 creator A5077978275 @default.
- W4213358882 date "2022-03-01" @default.
- W4213358882 modified "2023-09-30" @default.
- W4213358882 title "Unraveling the record of a tropical continental Cretaceous-Paleogene boundary in northern Colombia, South America" @default.
- W4213358882 cites W1524759453 @default.
- W4213358882 cites W1730150177 @default.
- W4213358882 cites W1756148205 @default.
- W4213358882 cites W1971083798 @default.
- W4213358882 cites W1972546096 @default.
- W4213358882 cites W1973818652 @default.
- W4213358882 cites W1978620538 @default.
- W4213358882 cites W1978639800 @default.
- W4213358882 cites W1980328862 @default.
- W4213358882 cites W1982572431 @default.
- W4213358882 cites W1992107132 @default.
- W4213358882 cites W1992578035 @default.
- W4213358882 cites W1995450465 @default.
- W4213358882 cites W2003200958 @default.
- W4213358882 cites W2003314189 @default.
- W4213358882 cites W2004113182 @default.
- W4213358882 cites W2004136203 @default.
- W4213358882 cites W2008936100 @default.
- W4213358882 cites W2011552409 @default.
- W4213358882 cites W2034671252 @default.
- W4213358882 cites W2038487387 @default.
- W4213358882 cites W2043645116 @default.
- W4213358882 cites W2044129104 @default.
- W4213358882 cites W2059315150 @default.
- W4213358882 cites W2064993075 @default.
- W4213358882 cites W2079006768 @default.
- W4213358882 cites W2087387336 @default.
- W4213358882 cites W2088836192 @default.
- W4213358882 cites W2089069736 @default.
- W4213358882 cites W2089698601 @default.
- W4213358882 cites W2097610086 @default.
- W4213358882 cites W2099270219 @default.
- W4213358882 cites W2105771959 @default.
- W4213358882 cites W2110619496 @default.
- W4213358882 cites W2116735545 @default.
- W4213358882 cites W2123830136 @default.
- W4213358882 cites W2131073891 @default.
- W4213358882 cites W2142621375 @default.
- W4213358882 cites W2146355351 @default.
- W4213358882 cites W2149802796 @default.
- W4213358882 cites W2152902450 @default.
- W4213358882 cites W2160490562 @default.
- W4213358882 cites W2166876167 @default.
- W4213358882 cites W2168726572 @default.
- W4213358882 cites W2168881659 @default.
- W4213358882 cites W2195825998 @default.
- W4213358882 cites W2257433446 @default.
- W4213358882 cites W2346473837 @default.
- W4213358882 cites W2464964567 @default.
- W4213358882 cites W2531637551 @default.
- W4213358882 cites W2566127310 @default.
- W4213358882 cites W2626601695 @default.
- W4213358882 cites W2801547709 @default.
- W4213358882 cites W2804889009 @default.
- W4213358882 cites W2931661088 @default.
- W4213358882 cites W2973192598 @default.
- W4213358882 cites W2976490658 @default.
- W4213358882 cites W2982071484 @default.
- W4213358882 cites W2995731951 @default.
- W4213358882 cites W3009109030 @default.
- W4213358882 cites W3010209400 @default.
- W4213358882 cites W3011309905 @default.
- W4213358882 cites W3014128782 @default.
- W4213358882 cites W3016098202 @default.
- W4213358882 cites W3130273201 @default.
- W4213358882 cites W3149863433 @default.
- W4213358882 cites W4213300453 @default.
- W4213358882 doi "https://doi.org/10.1016/j.jsames.2022.103717" @default.
- W4213358882 hasPublicationYear "2022" @default.
- W4213358882 type Work @default.
- W4213358882 citedByCount "2" @default.
- W4213358882 countsByYear W42133588822023 @default.
- W4213358882 crossrefType "journal-article" @default.
- W4213358882 hasAuthorship W4213358882A5017626343 @default.
- W4213358882 hasAuthorship W4213358882A5032588554 @default.
- W4213358882 hasAuthorship W4213358882A5036151692 @default.
- W4213358882 hasAuthorship W4213358882A5049606562 @default.
- W4213358882 hasAuthorship W4213358882A5051182893 @default.
- W4213358882 hasAuthorship W4213358882A5051456788 @default.
- W4213358882 hasAuthorship W4213358882A5062114510 @default.
- W4213358882 hasAuthorship W4213358882A5068585319 @default.
- W4213358882 hasAuthorship W4213358882A5077978275 @default.
- W4213358882 hasBestOaLocation W42133588821 @default.
- W4213358882 hasConcept C111368507 @default.