https://padlet.com/luciam40/95z6167t1fjv4xnw en-us 2025-10-01 09:02:29 UTC 2025-10-02 11:49:58 UTC hello@padlet.com luciam40 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3613102828 No es produeixen canvis. Perquè es doni aquest mecanisme, cal que la circulació d'aigua pels porus sigui mínima.

]]> 2025-10-01 09:18:28 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3613102828 luciam40 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3613104666 Aquest mecanisme és el més freqüent. Es tracta d'un procés de substitució de la matèria orgànica per substàncies minerals, fins que les restes de l'organisme es mineralitzen.

]]> 2025-10-01 09:20:12 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3613104666 luciam40 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615115815 Sol produir-se per reemplaçament i enriquiment en carboni de les restes originals a pressió i temperatures elevades. Es conserva l'estructura original.

]]> 2025-10-02 09:48:30 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615115815 luciam40 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615119597 La resta esquelètica queda reforçada per la precipitació de minerals addicionals ( que es troben en l'aigua del medi) en els espais porosos del esquelets.

]]> 2025-10-02 09:51:54 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615119597 luciam40 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615120508 Quan una closca o una altra estructura és enterrada sota un sediment i després aquesta estructura es dissolta per l'aigua subterrània, es crea un motlle. Si aquesta cavitat es reomple de material mineral, es forma un motlle intern.

]]> 2025-10-02 09:52:42 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615120508 luciam40 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615128113 Són traces, pistes, marques i altres restes, producte de l'activitat dels organismes.

]]> 2025-10-02 09:59:23 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615128113 luciam40 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615130685 Es produeix quan es conserven les parts toves dels animals. Ex: insectes conservats en ambre; momificació per mort en un ambient desèrtic o la conservació de mamuts congelats.

]]> 2025-10-02 10:01:56 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615130685 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615198689 2025-10-02 11:02:47 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615198689 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615200417 2025-10-02 11:04:21 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615200417 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615201060 2025-10-02 11:05:02 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615201060 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615202063 2025-10-02 11:05:17 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615202063 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615202566 2025-10-02 11:05:50 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615202566 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615204979 2025-10-02 11:07:52 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615204979 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615207285 2025-10-02 11:10:05 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615207285 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615208654 2025-10-02 11:11:09 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615208654 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615208833 2025-10-02 11:11:20 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615208833 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615211386 2025-10-02 11:13:36 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615211386 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615211489 2025-10-02 11:13:42 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615211489 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615211861 2025-10-02 11:14:01 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615211861 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615212415 2025-10-02 11:14:30 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615212415 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615212844 2025-10-02 11:14:52 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615212844 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615218720 Dracorex

]]> 2025-10-02 11:19:06 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615218720 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615220815 una conifera carbonifera

]]> 2025-10-02 11:20:06 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615220815 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615221459 Ophabinia

]]> 2025-10-02 11:20:49 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615221459 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615222960 amonita recoberta de minerals iridiscents

]]> 2025-10-02 11:22:24 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615222960 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615223728 2025-10-02 11:23:13 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615223728 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615226621 Ötzi

]]> 2025-10-02 11:25:48 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615226621 luciam40 https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615252831 2025-10-02 11:49:57 UTC https://padlet.com/luciam40/95z6167t1fjv4xnw/wish/3615252831