Class information for:
Level 1: K T BOUNDARY//CRETACEOUS TERTIARY BOUNDARY//CRETACEOUS PALEOGENE BOUNDARY

Basic class information
ID Publications Average number
of references		 Avg. shr. active
ref. in WoS
5360 1566 50.4 42%


Bar chart of Publication_year

Last years might be incomplete

Classes in level above (level 2)


ID, lev.
above		 Publications Label for level above
1997 5040 K T BOUNDARY//METEORITICS & PLANETARY SCIENCE//CRETACEOUS TERTIARY BOUNDARY

Terms with highest relevance score


Rank Term Type of term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 K T BOUNDARY Author keyword 87 60% 6% 94
2 CRETACEOUS TERTIARY BOUNDARY Author keyword 66 64% 4% 65
3 CRETACEOUS PALEOGENE BOUNDARY Author keyword 33 64% 2% 32
4 MAASTRICHTIAN Author keyword 17 19% 5% 77
5 CHICXULUB Author keyword 15 54% 1% 19
6 K PG BOUNDARY Author keyword 14 55% 1% 18
7 CHICXULUB IMPACT Author keyword 13 71% 1% 10
8 GEOL REMOTE SENSING Address 11 69% 1% 9
9 GEOSCI ENVIRONM TECH Address 9 83% 0% 5
10 CRETACEOUS PALEOGENE TRANSITION Author keyword 8 75% 0% 6

Web of Science journal categories

Author Key Words


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class		 LCSH search Wikipedia search
1 K T BOUNDARY 87 60% 6% 94 Search K+T+BOUNDARY Search K+T+BOUNDARY
2 CRETACEOUS TERTIARY BOUNDARY 66 64% 4% 65 Search CRETACEOUS+TERTIARY+BOUNDARY Search CRETACEOUS+TERTIARY+BOUNDARY
3 CRETACEOUS PALEOGENE BOUNDARY 33 64% 2% 32 Search CRETACEOUS+PALEOGENE+BOUNDARY Search CRETACEOUS+PALEOGENE+BOUNDARY
4 MAASTRICHTIAN 17 19% 5% 77 Search MAASTRICHTIAN Search MAASTRICHTIAN
5 CHICXULUB 15 54% 1% 19 Search CHICXULUB Search CHICXULUB
6 K PG BOUNDARY 14 55% 1% 18 Search K+PG+BOUNDARY Search K+PG+BOUNDARY
7 CHICXULUB IMPACT 13 71% 1% 10 Search CHICXULUB+IMPACT Search CHICXULUB+IMPACT
8 CRETACEOUS PALEOGENE TRANSITION 8 75% 0% 6 Search CRETACEOUS+PALEOGENE+TRANSITION Search CRETACEOUS+PALEOGENE+TRANSITION
9 K P BOUNDARY 8 75% 0% 6 Search K+P+BOUNDARY Search K+P+BOUNDARY
10 LATE MAASTRICHTIAN 8 50% 1% 12 Search LATE+MAASTRICHTIAN Search LATE+MAASTRICHTIAN

Key Words Plus


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 TERTIARY BOUNDARY 208 60% 15% 230
2 EL KEF 160 80% 6% 101
3 K T BOUNDARY 141 62% 9% 147
4 CRETACEOUS TERTIARY BOUNDARY 97 27% 19% 303
5 PALEOGENE BOUNDARY 75 76% 3% 53
6 CATASTROPHIC MASS EXTINCTION 48 91% 1% 20
7 PLANKTIC FORAMINIFERA 38 48% 4% 58
8 STEVNS KLINT 34 54% 3% 43
9 CHICXULUB IMPACT 25 47% 2% 39
10 NORMAL SEDIMENTARY DEPOSITS 24 91% 1% 10

Journals

Reviews


Title Publ. year Cit. Active
references		 % act. ref.
to same field
The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary 2010 178 47 83%
The global stratigraphy of the Cretaceous-Tertiary boundary impact ejecta 1999 216 47 83%
The extinction of the dinosaurs 2015 1 84 39%
Multiple impacts across the Cretaceous-Tertiary boundary 2003 55 71 92%
Sedimentary cycles, ammonite diversity and palaeoenvironmental changes in the Upper Cretaceous Marambio Group, Antarctica 2012 20 27 44%
Environmental perturbations caused by the impacts of asteroids and comets 1997 182 61 38%
Disaster opportunists Guembelitrinidae: index for environmental catastrophes 2004 36 59 90%
Consequences of the cretaceous/paleogene mass extinction for marine ecosystems 2005 41 49 61%
Benthic foraminifera across the Cretaceous-Tertiary (K-T) boundary: a review 2003 49 80 66%
The Cretaceous-Paleogene (K-P) boundary at Brazos, Texas: Sequence stratigraphy, depositional events and the Chicxulub impact 2006 37 96 57%

Address terms


Rank Address term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 GEOL REMOTE SENSING 11 69% 0.6% 9
2 GEOSCI ENVIRONM TECH 9 83% 0.3% 5
3 GEOCHEM COSMOCHEM ASTROCHEM 7 44% 0.8% 12
4 LAGESE 4 75% 0.2% 3
5 UNIV INVEST CIENCIAS AMBIENTALES ARAGON 3 39% 0.4% 7
6 STUDY GLOBAL CHANGE 3 32% 0.5% 8
7 CIENCIAS TIERRA PALEONTOL 3 24% 0.6% 10
8 URAC 46 3 60% 0.2% 3
9 GEOL FONDAMENTALE PLIQUEE 2 67% 0.1% 2
10 SAZU 2 67% 0.1% 2

Related classes at same level (level 1)


Rank Relatedness score Related classes
1 0.0000166424 METEORITICS & PLANETARY SCIENCE//IMPACT CRATERING GRP//SHOCK METAMORPHISM
2 0.0000140869 PALEOCENE EOCENE THERMAL MAXIMUM//PETM//EOCENE
3 0.0000126061 CRETACEOUS RESEARCH//AMMONITES//CENOMANIAN TURONIAN BOUNDARY
4 0.0000078647 DECCAN TRAPS//NARMADA SON LINEAMENT//BHUJ EARTHQUAKE
5 0.0000075779 BAHAMAS CARBONATE PLATFORM//BURIAL CONSOLIDATION//CLAY SEDIMENTATION
6 0.0000072849 FULGURITE//LECHATELIERITE//LIBYAN DESERT GLASS
7 0.0000070352 DSDP SITE 516//MARINE PORE WATER//MIOCENE TUFFS
8 0.0000065155 TATARA//INSTRUMENTAL NAA//IRON SAND
9 0.0000063201 PALEOBIOLOGY//COORDINATED STASIS//MACROEVOLUTION
10 0.0000057158 CHALK GROUP//BROAD FOURTEENS BASIN//WEST NETHERLANDS BASIN